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Electrician
Electrician Set-1
Transformers
73

Transformers MCQ - Electrician (Set-1) with Answers

73) What principle makes the instrument transformer working ?

Self induction

Lenz's law

Mutual induction

Fleming's right hand rule

Answer is:

Mutual induction

Transformers MCQ - Electrician (Set-1) with Answers

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Related Transformers MCQ - Electrician (Set-1) with Answers

74) What is the standard value of secondary current of current transformer ?

10 amperes

5 amperes

2 amperes

2 amperes

Answer is:

5 amperes

75) Current transformers are classified into five types. Which type of current transformer (C.T.) principle is used in clip on or clamp on Ammeter ?

Oil immersed C.T.

Dry type C.T

Ring type C.T.

Wound type C.T.

Answer is:

Ring type C.T.

76) What is the formula to be used to measure the actual power consumed, when the wattmeter is used along with C.T. and P.T. ?

Wattmeter reading x C.T. ratio

Wattmeter reading x P.T. ratio

Wattmeter reading x C.T. ratio x P.T. ratio

(Wattmeter reading/C.T. ratio) x P.T. ratio

Answer is:

Wattmeter reading x C.T. ratio x P.T. ratio

77) When using a potential transformer, it should be connected to the :

primary winding

secondary winding

low voltage winding

high voltage winding

Answer is:

secondary winding

Transformers MCQ - Electrician (Set-1) with Answers

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