AC & DC Bridges – 1 – 3

11. Low resistance is measured by :

(a) De Sauty’s bridge
(b) Maxwell’s bridge
(c) Kelvin’s double bridge
(d) Wien bridge

ANSWER

EXPLANATION

12. The following detector is generally used in AC bridges for audio frequency range :

(a) AC volt meter
(b) C.R.O.
(c) Headphones
(d) Vibration galvanometer

ANSWER

EXPLANATION

13. Which of the following is used to measure the leakage resistance of a capacitor ?

(a) Megger
(b) Schering bridge
(c) Potentiometer
(d) Loss of charge method

ANSWER

EXPLANATION

14. The necessary’ conditions for balancing of AC bridges are
(i) The product of the magnitude of the opposite arms must be equal
(ii) The sum of the phase angles of the opposite arm must be equal

(a) T,T
(b) T,F
(c) F,T
(d) F,F

ANSWER

EXPLANATION

15. Inductance is measured by :

(a) Wien bridge
(b) Schering bridge
(c) Maxwell’s bridge
(d) Owen bridge

ANSWER

EXPLANATION

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