1. . What is the current transformer?
(A) Transformer used with a D.C. ammeter
(B) Transformer used with an A.C. ammeter
(C) Transformer used with an A.C. voltmeter
(D) Transformer used with a D.C. voltmeter
2. . What is the potential transformer?
(A) Transformer used with an A.C. voltmeter
(B) Transformer used with a D.C. ammeter
(C) Transformer used with a D.C. ammeter
(D) Transformer used with an A.C. voltmeter
3. . C.T. and P.T. are used for _________
(A) Measuring low current and voltages
(B) Measuring very low current and voltages
(C) Measuring intermediate currents and voltages
(D) Measuring high currents and voltages
4. . The primary winding of a C.T. has _________
(A) A larger number of turns
(B) No turns at all
(C) Intermediate number of turns
(D) A few turns
5. . The secondary winding of a C.T. has _________
(A) A large number of turns
(B) A few turns
(C) No turns at all
(D) Intermediate number of turns
6. . The primary winding of a P.T. has _________
(A) Intermediate number of turns
(B) No turns at all
(C) A larger number of turns
(D) A few turns
7. . Turns ratio for a C.T. is _________
(A) n = Ns ⁄ Np
(B) n = Np ⁄ Ns
(C) n = 1 ⁄ Np
(D) n = Ns
8. . Current transformers and potential transformers are used to increase the ranges of
(A) DC ammeter and AC voltmeter respectively
(B) AC ammeter and DC voltmeter respectively
(C) DC ammeter and DC voltmeter respectively
(D) AC ammeter and AC voltmeter respectively
9. . The transformer ratio of the transformer depends upon the
(A) Exciting current
(B) Secondary current
(C) Power factor of secondary circuit
(D) All of these
10. . The potential transformers are used to measure large voltage using
(A) High range voltmeter
(B) Low range voltmeter
(C) High range ammeter
(D) Low range ammeter