Electrical machine MCQ

Electrical machine MCQ

  • Admin
  • 07th Feb, 2023

Take Electrical machine Quiz to test your Knowledge

Below are few Electrical machine MCQ test that checks your basic knowledge of Electrical machine. This Electrical machine Test contains around 20 questions of multiple choice with 4 options. You have to select the right answer to a question. You can see the correct answer by clicking view answer link.

Electrical machine MCQ Quiz

1) DC machine windings are -

  • A. short pitched
  • B.full pitched
  • C.either of these
  • D.none of the above

2) In a dc machine 4 pole lap winding is used. The number of parallel paths are?

  • A. 1
  • B.2
  • C.4
  • D.8

3) Inter pole winding is connected in-------------------------- ?

  • A. series with main poles
  • B.parallel with armature
  • C.parallel with main poles
  • D.series with armature

4) Equalizer rings are used in which of the followings?

  • A. wave winding
  • B.lap winding
  • C.Both 1 & 2
  • D.none of the above

5) Which of the following machine will be preferred to charge the batteries?

  • A. Series generator
  • B.Series motor
  • C.Shunt motor
  • D.Shunt motor
Download Free : Electrical machine MCQ PDF

6) The large number of slots in induction motor -

  • A. Provides better overload capacity
  • B.Provides bigger size of motor
  • C.Reduces overload capacity
  • D.Reduces the size of motor

7) The number of bushings in a transformer can be reduced if

  • A. The tapping are provided at the high voltage side
  • B.The tapping are provided at the phase ends
  • C.The tapping are provided in middle of the transformer
  • D.The tapping are provided on the low voltage side

8) The armature voltage control of dc motor will provides -

  • A. Constant voltage drive
  • B.Constant current drive
  • C.Constant torque drive
  • D.Constant torque drive

9) The air cores in transformers are preferred for -

  • A. Low frequency transformers
  • B.5 kVA, 50 Hz transformers
  • C.High frequency transformers
  • D.All of the above

10) The amplidyne is -

  • A. Half compensated cross field machine
  • B.Fully compensated cross field machine
  • C.Over-compensated cross field machine
  • D.Under-compensated cross field machine

11) A differential relay comparator used for the protection of three phase transformers has -

  • A. Three comparator
  • B.Two comparator
  • C.Six comparator
  • D.One comparator

12) Scott connection is used for the conversion of -

  • A. Three phase to single phase
  • B.Single phase to two phase
  • C.Single phase to three phase
  • D.All of these

13) In a three phase transformer, the angle between two consecutive cores is -

  • A. 30 degree
  • B.60 degree
  • C.150 degree
  • D.120 degree

14) The high leakage impedance transformers are suitable for the applications of -

  • A. Personal computers
  • B.Street lights
  • C.Arc welding
  • D.Electric lamp

15) In washing machines, most commonly used motors are -

  • A. Split phase induction motors
  • B.Capacitor start induction motors
  • C.Slip ring induction motors
  • D.Shaded pole induction motors

16) Which test is also called as back to back test?

  • A. Retardation test
  • B.Field test
  • C.Sumpner’s test
  • D.Voltage drop test

17) Iron loss in a transformer mainly occurs in -

  • A. iron made tank of transformer
  • B.winding of transformer
  • C.steel core in transformer.
  • D.transformer insulating oil.

18) In one 132 / 33 kV transformer the LV resistance is 0.02 per unit. The resistance referred to HV side is -

  • A. 0.01 pu.
  • B.0.02 pu.
  • C.0.08 pu.
  • D.0.16 pu.

19) A short circuit test on a transformer gives -

  • A. copper loss at half load
  • B.copper loss at full load
  • C.copper loss at any load
  • D.copper loss at over load.

20) Secondary winding of an auto transformer is also called -

  • A. common winding
  • B.tertiary winding
  • C.damping winding
  • D.compensating winding

Leave A Comment :

Valid name is required.

Valid name is required.

Valid email id is required.