MCQ, set-6, Testing & Commissioning of Electrical Equipments

Electrical engineering

MCQ related to Testing and Commissioning of Electrical Equipment (TCEE)

Set : 6

51. Quantity not related to insulating oil ?

A) Dielectric strength
B) Conduction
C) Sludge
D) Flash point

... Answer is B)
Conduction

53. Which is not a cooling system with IC code ?

A) Hydrogen cooling
B) Liquid cooling
C) Direct cooling
D) Nitrogen cooling

... Answer is D)
Nitrogen cooling

54. Which test is performed before installing rotating machine ?

A) High voltage test
B) Drying of winding
C) Phase sequence
D) All

... Answer is D)
All

55. Which specific test is not for induction motor ?

A) Measurement of slip
B) locked rotor test
C) Testing of excitation system
D) Measurement of voltage ratio

... Answer is C)
Testing on excitation system

56. Which is drying out method for electrical machine ?

A) heating by lamp
B) by increasing losses
C) Stopping cooling
D) All

... Answer is D)
All

57. Which tests are performed on electrical machines ?

A) type & commissioning test
B) routine & special test
C) reliability & maintenance test
D) All

... Answer is D)
All

58. Which method use to reduce noise in d.c machine ?

A) increase armature slots
B) grading the pole gap
C) increasing air gap
D) All

... Answer is D)
All

59. Which method not use for d.c machine testing ?

A) Swinburne test
B) Hopkinson's test
C) separation of losses
D) Kelvin's test

... Answer is D)
Kelvin's test

60. Which is wrong ?

A) Swinburne test is no load test
B) Hopkinson's test is back to back test
C) separation of losses is full load test
D) field test use for large motor

... Answer is C)
separation of losses is full load test

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