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Read : CSEB JE EE 2023 Question Paper
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Posted on :- 2026-03-01 23:22:51
a.)
b.)
c.)
d.)
a.) 1, 2 and 4 only
b.) 3 and 4 only
c.) 1 and 2 only
d.) 1, 2 and 3 only
a.) 2.32 V
b.) 6.67 V
c.) 5.21 V
d.) 9.86 V
a.) 10 mA
b.) 5.1 mA
c.) 20.4 mA
d.) 4.9 mA
a.) 2 ohms
b.) 4 ohms
c.) 6 ohms
d.) 8 ohms
a.) -3V
b.) +3V
c.) +6V
d.) +9V
CSPCL JE Electrical Question Paper
1.) When did “Mahatma Gandhi Rural Industrial Park Yojana” (RIPA) start?
a.) 21 May, 2023
b.) 25 April, 2023
c.) 02 October, 2021
d.) 02 October, 2022
a.) 21 May, 2023
b.) 25 April, 2023
c.) 02 October, 2021
d.) 02 October, 2022
2.) Which is the National Public Digital Platform for languages, developed by the central government to help provide online services in native languages?
a.) Meri Bhasha Mera Abhimaan
b.) Shaili
c.) Vadati
d.) Bhashini
a.) Meri Bhasha Mera Abhimaan
b.) Shaili
c.) Vadati
d.) Bhashini
3.) Which of the following is a submerged land mass whose mapping was recently completed and it is referred to as the 8th continent (or hidden continent) of the planet?
a.) Siberia
b.) Alaska
c.) Zealandia
d.) Greenland
a.) Siberia
b.) Alaska
c.) Zealandia
d.) Greenland
4.) In which folk epics has the story of Ram’s arrival in Dandakaranya been presented?
a.) Halbi Ramkatha
b.) Madiya Ramkatha
c.) Both a and b
d.) Halbi, Madiya, Muriya Ramkatha
a.) Halbi Ramkatha
b.) Madiya Ramkatha
c.) Both a and b
d.) Halbi, Madiya, Muriya Ramkatha
5.) Where are Lithium reserves confirmed in Chhattisgarh?
a.) Madanwada
b.) Majinghad
c.) Katghora
d.) Khapri
a.) Madanwada
b.) Majinghad
c.) Katghora
d.) Khapri
6.) What is included in the word ‘State’ as defined in article 12 of the Constitution? (i) Government of India & Parliament (ii) State Government & State Legislature (iii) All local and other authorities (iv) All Judiciaries
a.) (i)
b.) (i) (ii)
c.) (i) (ii) (iii)
d.) (i) (ii) (iii) (iv)
a.) (i)
b.) (i) (ii)
c.) (i) (ii) (iii)
d.) (i) (ii) (iii) (iv)
7.) European Company “Airbus” has entered into a deal with which Indian company to manufacture C295 Transport Aircraft for Indian Airforce?
a.) Hindustan Aeronautics Limited (HAL)
b.) Tata Advanced Systems Limited (TASL)
c.) Tech Mahindra
d.) Reliance Naval and Engineering Limited
a.) Hindustan Aeronautics Limited (HAL)
b.) Tata Advanced Systems Limited (TASL)
c.) Tech Mahindra
d.) Reliance Naval and Engineering Limited
8.) Hello Zindagi Abhiyan is related to-
a.) Swachatha
b.) Safety
c.) Against addiction
d.) Increase in Health
a.) Swachatha
b.) Safety
c.) Against addiction
d.) Increase in Health
9.) Who is ex-officio Chairman of the House?
a.) Speaker of House of the People
b.) Chairman of Council of States
c.) Speaker of State Legislative Assembly
d.) Chairman of State Legislative Council
a.) Speaker of House of the People
b.) Chairman of Council of States
c.) Speaker of State Legislative Assembly
d.) Chairman of State Legislative Council
10.) Where the first plastic recycling factory of Chhattisgarh state will be set up?
a.) Katghora
b.) Babu Semra
c.) Lohandiguda
d.) Karanghara
a.) Katghora
b.) Babu Semra
c.) Lohandiguda
d.) Karanghara
11.) Bastar 1859 what was the root cause of discontent among ‘Koi’ tribals?
a.) The British government giving the contract of Bastar forests to Hyderabad merchants
b.) Grievances not heard by British Government
c.) No transportation facilities
d.) Did not get political importance
a.) The British government giving the contract of Bastar forests to Hyderabad merchants
b.) Grievances not heard by British Government
c.) No transportation facilities
d.) Did not get political importance
12.) Rock painting found in Kabra Mountain (Pahad) of Raigarh mainly have following colour-
a.) Black
b.) Grey
c.) Red Ochre
d.) Mixed
a.) Black
b.) Grey
c.) Red Ochre
d.) Mixed
13.) The tribals from which area gave the slogan “Hum Yudh Karengey” while surrounded by the British Army?
a.) Keshkaal
b.) Alnaar
c.) Bhopal Patnam
d.) None of the above
a.) Keshkaal
b.) Alnaar
c.) Bhopal Patnam
d.) None of the above
14.) Which company performed the ground breaking ceremony for its new semi-conductor plant in Sanand Gujarat in Sept. 2023?
a.) Vedanta Limited
b.) Foxconn Limited
c.) Micron Technology Limited
d.) IBM Limited
a.) Vedanta Limited
b.) Foxconn Limited
c.) Micron Technology Limited
d.) IBM Limited
15.) In the following question, a letter-number series is given with one term missing as shown by (?). Choose the missing term out of the given alternatives. 2, A, 9, B, 6, C, 13, D, ?
a.) 9
b.) 10
c.) 12
d.) 19
a.) 9
b.) 10
c.) 12
d.) 19
16.) If A + B means B is the brother of A; A x B means B is the husband of A; A - B means A is the mother of B and A%B means A is the father of B, which of the following relations shows that Q is the grandmother of T?
a.) Q - P + R % T
b.) P x Q % R - T
c.) P x Q % R + T
d.) P + Q % R - T
a.) Q - P + R % T
b.) P x Q % R - T
c.) P x Q % R + T
d.) P + Q % R - T
17.) Find out which of the figure can be formed from the pieces given in figure below?
a.)
b.)
c.)
d.)
18.) In each of the following questions, various terms of an alphabet series are given with one or more terms missing as shown by (?). Choose the missing terms out of the given alternatives. A, B, B, D, C, F, D; H, E, ?, ?
a.) E, F
b.) F, G
c.) F, I
d.) J, F
a.) E, F
b.) F, G
c.) F, I
d.) J, F
19.) The figure given on the left hand side in each of the following questions is folded to form a box. Choose from the alternatives (1), (2), (3) and (4) the boxes that is similar to the box formed.
a.) 1, 2 and 4 only
b.) 3 and 4 only
c.) 1 and 2 only
d.) 1, 2 and 3 only
20.) Arrange the words given below in a meaningful sequence. 1. Poverty, 2. Population, 3. Death, 4. Unemployment, 5. Disease
a.) 2, 3, 4, 5, 1
b.) 3, 4, 2, 5, 1
c.) 2, 4, 1, 5, 3
d.) 1, 2, 3, 4, 5
a.) 2, 3, 4, 5, 1
b.) 3, 4, 2, 5, 1
c.) 2, 4, 1, 5, 3
d.) 1, 2, 3, 4, 5
21.) A transformer having maximum efficiency at 75% full load will have ratio of iron loss and full load copper loss equal to -------.
a.) 4/3
b.) 3/4
c.) 9/16
d.) 16/9
a.) 4/3
b.) 3/4
c.) 9/16
d.) 16/9
22.) If the number of rotor slots are equal to the number of stator slots, the machine would refuse to start, this is known as-
a.) Cogging
b.) Crawling
c.) Either of the above
d.) None of the above
a.) Cogging
b.) Crawling
c.) Either of the above
d.) None of the above
23.) In the given circuit voltage across 5 ohm resistor is-
a.) 2.32 V
b.) 6.67 V
c.) 5.21 V
d.) 9.86 V
24.) The speed at which rotating magnetic field revolves is called-
a.) Induction speed
b.) Synchronous speed
c.) Relative speed
d.) Rotating speed
a.) Induction speed
b.) Synchronous speed
c.) Relative speed
d.) Rotating speed
25.) A cycloconverter is a ----- frequency changer.
a.) Two-stage
b.) One-stage
c.) Four-stage
d.) Three-stage
a.) Two-stage
b.) One-stage
c.) Four-stage
d.) Three-stage
26.) 10 kWh is equal to ------- joules.
a.) 36000
b.) 360000
c.) 3600
d.) 36000000
a.) 36000
b.) 360000
c.) 3600
d.) 36000000
27.) Synchronous motors generally have-
a.) Smooth cylindrical rotor
b.) Either salient pole or smooth cylindrical rotor
c.) Salient pole rotor
d.) Cage rotor
a.) Smooth cylindrical rotor
b.) Either salient pole or smooth cylindrical rotor
c.) Salient pole rotor
d.) Cage rotor
28.) The outer cage of a double squirrel rotor consists of-
a.) Red copper
b.) Steel
c.) Bronze
d.) Manganese brass
a.) Red copper
b.) Steel
c.) Bronze
d.) Manganese brass
29.) For 4% increase in supply voltage, the torque of an induction motor increases by-
a.) 16%
b.) 8%
c.) 4%
d.) 2%
a.) 16%
b.) 8%
c.) 4%
d.) 2%
30.) In HVDC system what would be sequence of the parameter conversion from sending end side to receiving end side?
a.) dc-dc-ac-dc
b.) ac-dc-dc-ac
c.) ac-ac-dc-ac
d.) dc-ac-dc-ac
a.) dc-dc-ac-dc
b.) ac-dc-dc-ac
c.) ac-ac-dc-ac
d.) dc-ac-dc-ac
31.) The Current in the circuit below is-
a.) 10 mA
b.) 5.1 mA
c.) 20.4 mA
d.) 4.9 mA
32.) Bundled conductors are used for EHV transmission lines primarily for reducing the -----
a.) Corona loss
b.) Surge impedance
c.) Voltage drop across the line
d.) None of the above
a.) Corona loss
b.) Surge impedance
c.) Voltage drop across the line
d.) None of the above
33.) In a synchronous machine, if the field flux axis is ahead of the armature field axis in the direction of rotation, the machine operating is-
a.) Synchronous motor
b.) Synchronous generator
c.) Asynchronous motor
d.) Asynchronous generator
a.) Synchronous motor
b.) Synchronous generator
c.) Asynchronous motor
d.) Asynchronous generator
34.) Main disadvantage of using short-pitch winding in alternators is that it-
a.) Reduces the total voltage around the armature coils
b.) Reduces harmonics in the generated voltage
c.) Produces a symmetry in the three phase windings
d.) Increase Cu of end connections
a.) Reduces the total voltage around the armature coils
b.) Reduces harmonics in the generated voltage
c.) Produces a symmetry in the three phase windings
d.) Increase Cu of end connections
35.) For the same power rating, an alternator operating at lower voltage will be-
a.) Less noisy
b.) Costlier
c.) Larger in size
d.) More efficient
a.) Less noisy
b.) Costlier
c.) Larger in size
d.) More efficient
36.) ------ based inverters do not require self commutation.
a.) IGBT
b.) GTO
c.) PMOSFET
d.) SCR
a.) IGBT
b.) GTO
c.) PMOSFET
d.) SCR
37.) Bulk power transmission over long HVDC lines are preferred on account of-
a.) Low cost of an HVDC terminal
b.) No harmonic problem
c.) Minimum line electric power losses
d.) Simple protection
a.) Low cost of an HVDC terminal
b.) No harmonic problem
c.) Minimum line electric power losses
d.) Simple protection
38.) A single-phase half-bridge inverter has input voltage of 48 V DC. Inverter is feeding a load of 2.4 Ω. The RMS output voltage at fundamental frequency is-
a.) (2 x 48) / π V
b.) (2 x 48) / (2 x π) V
c.) (2 x 48) / π V
d.) (2 x 48) / (2√2 x π) V
a.) (2 x 48) / π V
b.) (2 x 48) / (2 x π) V
c.) (2 x 48) / π V
d.) (2 x 48) / (2√2 x π) V
39.) Full load current of a 20 kW, 3 phase, 50Hz, 440V induction motor is-
a.) 78A
b.) 48A
c.) 38A
d.) 10A
a.) 78A
b.) 48A
c.) 38A
d.) 10A
40.) Synchronous reactance of an alternator represents-
a.) Armature reactance and leakage reactance
b.) Reactance operating at synchronous speed
c.) Field winding reactance
d.) All of the above
a.) Armature reactance and leakage reactance
b.) Reactance operating at synchronous speed
c.) Field winding reactance
d.) All of the above
41.) When 5Ω, 10Ω and 15Ω resistors are connected in series with a 12 V voltage source, what is the value voltage across resistor 5?
a.) 1.12 V
b.) 21 V
c.) 15 V
d.) 2 V
a.) 1.12 V
b.) 21 V
c.) 15 V
d.) 2 V
42.) Which motor can conveniently operate on lagging as well as leading power factor?
a.) Synchronous motor
b.) Slip ring induction motor
c.) Squirrel cage induction motor
d.) Any of the above
a.) Synchronous motor
b.) Slip ring induction motor
c.) Squirrel cage induction motor
d.) Any of the above
43.) The primary winding of a transformer has a 120 V ac supply. What is the value of secondary voltage if the turn ratio is 10?
a.) 120 V
b.) 12 V
c.) 1200 V
d.) 12000 V
a.) 120 V
b.) 12 V
c.) 1200 V
d.) 12000 V
44.) An SCR is a-
a.) four layer, four junction device
b.) four layer, three junction device
c.) four layer, two junction device
d.) three layer, single junction device
a.) four layer, four junction device
b.) four layer, three junction device
c.) four layer, two junction device
d.) three layer, single junction device
45.) Which of the following transmission lines is used in converter station?
a.) Distribution line for residential areas
b.) HVDC Lines
c.) EHV AC Lines
d.) Low Voltage AC Lines
a.) Distribution line for residential areas
b.) HVDC Lines
c.) EHV AC Lines
d.) Low Voltage AC Lines
46.) Input ripple of SMPS is-
a.) High
b.) Nil
c.) Very low
d.) Low
a.) High
b.) Nil
c.) Very low
d.) Low
47.) Which test determines the efficiency of two identical transformers under load conditions?
a.) Low voltage test
b.) Full-load test
c.) Back-to-Back test (Sumpner’s Test)
d.) Open circuit test
a.) Low voltage test
b.) Full-load test
c.) Back-to-Back test (Sumpner’s Test)
d.) Open circuit test
48.) Which of the following is likely to be the full load power factor of a three phase induction motor?
a.) 0.2 leading
b.) 0.2 lagging
c.) 0.8 leading
d.) 0.8 lagging
a.) 0.2 leading
b.) 0.2 lagging
c.) 0.8 leading
d.) 0.8 lagging
49.) In star-delta starting of squirrel cage induction motor, compared to DOL (direct on line) starting, the starting current and torque are-
a.) 1/3, 1/3
b.) 1/3, 1/3
c.) 1/3, 1/3
d.) 1/3, 1/3
a.) 1/3, 1/3
b.) 1/3, 1/3
c.) 1/3, 1/3
d.) 1/3, 1/3
50.) During the open circuit test of a transformer-
a.) The secondary winding is supplied rated KVA
b.) Primary winding is supplied with full-load current
c.) Primary winding is supplied current at high voltage
d.) Primary winding is supplied rated voltage
a.) The secondary winding is supplied rated KVA
b.) Primary winding is supplied with full-load current
c.) Primary winding is supplied current at high voltage
d.) Primary winding is supplied rated voltage
51.) At which load condition maximum efficiency of a distribution transformer will be achieved?
a.) At no load
b.) At 60% full load
c.) At 80% full load
d.) At full load
a.) At no load
b.) At 60% full load
c.) At 80% full load
d.) At full load
52.) In an induction motor, what is the ratio of rotor copper loss and rotor input?
a.) 1 / s
b.) s
c.) (1 - s)
d.) s / (1 - s)
a.) 1 / s
b.) s
c.) (1 - s)
d.) s / (1 - s)
53.) A 220 V 3-phase voltage is applied to a balanced delta connected 3-phase purely resistive load. What is the ratio of reactive power to active power?
a.) 0.5
b.) 0
c.) 0.25
d.) 1
a.) 0.5
b.) 0
c.) 0.25
d.) 1
54.) In case of AC motor circuit, static frequency changers are used for-
a.) Power factor improvement
b.) Improvement in cooling
c.) Reversal of direction of rotation
d.) Speed regulation
a.) Power factor improvement
b.) Improvement in cooling
c.) Reversal of direction of rotation
d.) Speed regulation
55.) In a parallel inverter-
a.) each thyristor is turned on twice during each cycle
b.) each thyristor is turned on once during each cycle
c.) each thyristor is turned on either once or twice in each load cycle
d.) each thyristor may be turned on upto four times in each load cycle
a.) each thyristor is turned on twice during each cycle
b.) each thyristor is turned on once during each cycle
c.) each thyristor is turned on either once or twice in each load cycle
d.) each thyristor may be turned on upto four times in each load cycle
56.) The equivalent resistance between A and B is-
a.) 2 ohms
b.) 4 ohms
c.) 6 ohms
d.) 8 ohms
57.) The output of a single-phase half bridge inverter on R load is ideally-
a.) a sine wave
b.) a square wave
c.) a triangular wave
d.) constant DC
a.) a sine wave
b.) a square wave
c.) a triangular wave
d.) constant DC
58.) Which of the following is not the valid characteristics of Switched mode power supply as compared to linear power supply?
a.) Higher Efficiency
b.) Low noise at output
c.) Light Weight
d.) Smaller size of a Transformer
a.) Higher Efficiency
b.) Low noise at output
c.) Light Weight
d.) Smaller size of a Transformer
59.) The torque produced in the induction motor depends on the following factors- 1) The part of rotating magnetic field which reacts with rotor and is responsible for producing emf. 2) The magnitude of rotor current in running condition. 3) The power factor of the rotor circuit in running condition. Which of the above statement/s is true?
a.) 1
b.) 1 & 2
c.) 2 & 3
d.) 1, 2 & 3
a.) 1
b.) 1 & 2
c.) 2 & 3
d.) 1, 2 & 3
60.) Resistivity of the wire depends upon-
a.) Length
b.) Material
c.) Cross-sectional area
d.) None of the above
a.) Length
b.) Material
c.) Cross-sectional area
d.) None of the above
61.) An induction motor always operates on lagging power factor. This is due to-
a.) Stator reactance
b.) Rotor leakage reactance
c.) Large reactive lagging magnetizing current essential to produce the magnetic flux
d.) All of the above
a.) Stator reactance
b.) Rotor leakage reactance
c.) Large reactive lagging magnetizing current essential to produce the magnetic flux
d.) All of the above
62.) A circuit that contains two un-equal resistance in parallel-
a.) Current is same in both
b.) Large current flows in the larger resistance
c.) Potential difference across each is same
d.) Smaller resistance has smaller conductance
a.) Current is same in both
b.) Large current flows in the larger resistance
c.) Potential difference across each is same
d.) Smaller resistance has smaller conductance
63.) A 230 V, 50 Hz, one-pulse SCR controlled converter has extinction angle β = 210º. Find the circuit turn-off time-
a.) 10 m-sec
b.) 0
c.) 8.3 m-sec
d.) 5.4 m-sec
a.) 10 m-sec
b.) 0
c.) 8.3 m-sec
d.) 5.4 m-sec
64.) In a given transformer for given applied voltage, which of the following losses remain constant irrespective of load changes?
a.) Friction and windage losses
b.) Copper losses
c.) Hysteresis and eddy current losses
d.) Cannot be determined
a.) Friction and windage losses
b.) Copper losses
c.) Hysteresis and eddy current losses
d.) Cannot be determined
65.) The magnetic flux in a closed circuit of resistance 20Ω varies with time t as ∅ = 3t² + 24t - 2t + 15t³ + 3. Calculate the magnitude of induced emf at t = 1s.
a.) 1V
b.) -1V
c.) 3V
d.) 4V
a.) 1V
b.) -1V
c.) 3V
d.) 4V
66.) Ward-Leonard system of speed control is not recommended for-
a.) Wide Speed range
b.) Constant Speed operation
c.) Frequent motor reversal
d.) Very Low speed
a.) Wide Speed range
b.) Constant Speed operation
c.) Frequent motor reversal
d.) Very Low speed
67.) Which transformer is used in a regulated DC power supply?
a.) Auto Transformer
b.) Step up Transformer
c.) Isolation Transformer
d.) Step Down Transformer
a.) Auto Transformer
b.) Step up Transformer
c.) Isolation Transformer
d.) Step Down Transformer
68.) What will be the Full pitch of the 3-phase, 36 slots, 36 coils, 6 pole motor?
a.) 9
b.) 6
c.) 12
d.) 18
a.) 9
b.) 6
c.) 12
d.) 18
69.) Which of the following statement is TRUE in case of a HVDC system?
a.) Neither charging current nor skin effect
b.) Charging current as well as skin effect
c.) Charging current but no skin effect
d.) No charging current but skin effect
a.) Neither charging current nor skin effect
b.) Charging current as well as skin effect
c.) Charging current but no skin effect
d.) No charging current but skin effect
70.) Any electromechanical energy conversion device uses which of the following field to convert electrical energy into mechanical energy and vice versa?
a.) Electric field
b.) Magnetic field
c.) Both A & B
d.) None
a.) Electric field
b.) Magnetic field
c.) Both A & B
d.) None
71.) Three phase-controlled rectifiers used for speed control of d.c. motors convert fixed a.c. supply voltage into-
a.) Variable d.c. supply voltage
b.) Variable a.c. supply voltage
c.) Full-rectified a.c. voltage
d.) Half-rectified a.c. voltage
a.) Variable d.c. supply voltage
b.) Variable a.c. supply voltage
c.) Full-rectified a.c. voltage
d.) Half-rectified a.c. voltage
72.) Force on conductor placed in uniform magnetic field can be increased with-
a.) Increase in distance
b.) Decrease in distance
c.) Increase in current
d.) Decrease in current
a.) Increase in distance
b.) Decrease in distance
c.) Increase in current
d.) Decrease in current
73.) For a step-down d.c. chopper operating with discontinuous load current, what is the expression for the load voltage? (K is duty ratio of chopper)
a.) Vo = Vdc x K
b.) Vo = Vdc / K
c.) Vo = Vdc / (1 - K)
d.) Vo = Vdc x (1 - K)
a.) Vo = Vdc x K
b.) Vo = Vdc / K
c.) Vo = Vdc / (1 - K)
d.) Vo = Vdc x (1 - K)
74.) If the phase sequence of supply current is reversed, then the direction of rotation of the resultant MMF wave will -------.
a.) Be reversed
b.) Remain unchanged
c.) Cannot be determined
d.) None of the mentioned
a.) Be reversed
b.) Remain unchanged
c.) Cannot be determined
d.) None of the mentioned
75.) The single phase mid-point type cycloconverter uses ------ number of SCRs.
a.) 4
b.) 8
c.) 6
d.) None of the mentioned
a.) 4
b.) 8
c.) 6
d.) None of the mentioned
76.) Nichrome is used for making filament for electric heaters because of-
a.) Low conductivity and small temperature coefficient of resistivity
b.) High conductivity and small temperature coefficient of resistivity
c.) High conductivity and Large temperature coefficient of resistivity
d.) Low conductivity and Large temperature coefficient of resistivity
a.) Low conductivity and small temperature coefficient of resistivity
b.) High conductivity and small temperature coefficient of resistivity
c.) High conductivity and Large temperature coefficient of resistivity
d.) Low conductivity and Large temperature coefficient of resistivity
77.) The heated parts of the electrical machines dissipate heat into their surroundings by which of the following modes of heat dissipation?
a.) Conduction
b.) Convection
c.) Radiation
d.) All of the above
a.) Conduction
b.) Convection
c.) Radiation
d.) All of the above
78.) A bipolar DC line has ----- conductor.
a.) 3
b.) 1
c.) 4
d.) 2
a.) 3
b.) 1
c.) 4
d.) 2
79.) Slip rings for induction motors are made of-
a.) Either Brass or Phosphor bronze
b.) Mild steel
c.) Cast iron
d.) Chromium Steel
a.) Either Brass or Phosphor bronze
b.) Mild steel
c.) Cast iron
d.) Chromium Steel
80.) In AC servomotor main winding and control winding are displaced by-
a.) 90º electrically
b.) 90º mechanically
c.) 180º electrically
d.) 180º mechanically
a.) 90º electrically
b.) 90º mechanically
c.) 180º electrically
d.) 180º mechanically
81.) In Fleming’s left hand rule, thumb is used to show the direction of-
a.) Electric current
b.) Magnetic field
c.) Motion of conductor
d.) All of these
a.) Electric current
b.) Magnetic field
c.) Motion of conductor
d.) All of these
82.) --------- are always double layer type.
a.) Closed Winding
b.) Open windings
c.) Both A & B
d.) None
a.) Closed Winding
b.) Open windings
c.) Both A & B
d.) None
83.) Out of the following which Multi-pulse converter is mostly used in HVDC?
a.) 6-pulse converter
b.) 18-pulse converter
c.) 12-pulse converter
d.) 7-level multilevel inverter
a.) 6-pulse converter
b.) 18-pulse converter
c.) 12-pulse converter
d.) 7-level multilevel inverter
84.) In a three phase half-wave cycloconverter -------
a.) both inversion and conversion action takes place
b.) only inversion action takes place
c.) only converting action takes place
d.) none of the mentioned
a.) both inversion and conversion action takes place
b.) only inversion action takes place
c.) only converting action takes place
d.) none of the mentioned
85.) An alternating current can be produced by-
a.) Choke Coil
b.) Dynamo
c.) Electric Motor
d.) Transformer
a.) Choke Coil
b.) Dynamo
c.) Electric Motor
d.) Transformer
86.) The main application of multilevel inverter is in-
a.) voltage regulator
b.) synchronous buck converter
c.) dc motor drive
d.) reactive power compensation
a.) voltage regulator
b.) synchronous buck converter
c.) dc motor drive
d.) reactive power compensation
87.) Single phase half bridge inverters requires-
a.) Two wire ac supply
b.) Two wire dc supply
c.) Three wire ac supply
d.) Three wire dc supply
a.) Two wire ac supply
b.) Two wire dc supply
c.) Three wire ac supply
d.) Three wire dc supply
88.) A chopper may be thought as a-
a.) Inverter with dc input
b.) dc equivalent of an ac transformer
c.) Diode rectifier
d.) dc equivalent of an induction motor
a.) Inverter with dc input
b.) dc equivalent of an ac transformer
c.) Diode rectifier
d.) dc equivalent of an induction motor
89.) In textile machines, to avoid breaking of threads, soft starters are used. The commonly used method in soft starter is-
a.) Star-delta method
b.) Direct Online Method (DOL)
c.) Thyristor current controller method
d.) Thyristor voltage controller method
a.) Star-delta method
b.) Direct Online Method (DOL)
c.) Thyristor current controller method
d.) Thyristor voltage controller method
90.) The potential difference between the points A and B in the given figure will-
a.) -3V
b.) +3V
c.) +6V
d.) +9V
91.) Salient-pole rotors are not used for high speed turbo alternators because of-
a.) Large eddy loss
b.) Excessive bearing friction
c.) High centrifugal force and winding loss
d.) Harmful mechanical oscillations
a.) Large eddy loss
b.) Excessive bearing friction
c.) High centrifugal force and winding loss
d.) Harmful mechanical oscillations
92.) In a rotating electrical machine, the chording angle for eliminating fifth harmonic should be-
a.) 38 degree
b.) 36 degree
c.) 33 degree
d.) 30 degree
a.) 38 degree
b.) 36 degree
c.) 33 degree
d.) 30 degree
93.) Mesh Analysis employs the method of -------.
a.) Kirchoff’s Voltage Law (KVL)
b.) Kirchoff’s Current Law (KCL)
c.) Both A & B
d.) None of the above
a.) Kirchoff’s Voltage Law (KVL)
b.) Kirchoff’s Current Law (KCL)
c.) Both A & B
d.) None of the above
94.) Which of the following is commonly used type of electromagnet?
a.) Flat faced armature type
b.) Horse shoe type
c.) Flat faced plunger type
d.) All of the above
a.) Flat faced armature type
b.) Horse shoe type
c.) Flat faced plunger type
d.) All of the above
95.) The regulated DC power supply also called-
a.) Linear power supply
b.) Non-linear power supply
c.) Capacitor
d.) Filters
a.) Linear power supply
b.) Non-linear power supply
c.) Capacitor
d.) Filters
96.) In a split phase motor the ratio of number of turns on auxiliary winding to that on main winding is-
a.) 1
b.) Less than 1
c.) More than 1
d.) 2
a.) 1
b.) Less than 1
c.) More than 1
d.) 2
97.) Why in OC test LV side is connected to supply?
a.) Simple construction
b.) Less voltage is required and parameters can be transformed to HV side
c.) Less current is required and parameters can be transformed to HV side
d.) HV side does not have connections for voltage
a.) Simple construction
b.) Less voltage is required and parameters can be transformed to HV side
c.) Less current is required and parameters can be transformed to HV side
d.) HV side does not have connections for voltage
98.) Consider the following statements regarding DC servomotor. (i) The speed of servomotor can be controlled by varying the armature voltage. (ii) The armature is deliberately designed to have large armature resistance.
a.) Only Statement (i) is correct
b.) Only Statement (ii) is correct
c.) Both statements (i) and (ii) are correct
d.) Both statements are wrong
a.) Only Statement (i) is correct
b.) Only Statement (ii) is correct
c.) Both statements (i) and (ii) are correct
d.) Both statements are wrong
99.) A voltage source inverter is used when source and load inductances are respectively-
a.) Small and small
b.) Large and large
c.) Large and small
d.) Small and large
a.) Small and small
b.) Large and large
c.) Large and small
d.) Small and large
100.) In V/F control of 3-phase induction motor, if voltage is increased by 10%, in order to keep air flux constant, what is the % increment or decrement in frequency?
a.) Frequency is decreased by 10%
b.) Frequency is decreased by 20%
c.) Frequency is increased by 10%
d.) Frequency is increased by 20%
a.) Frequency is decreased by 10%
b.) Frequency is decreased by 20%
c.) Frequency is increased by 10%
d.) Frequency is increased by 20%
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