Practice Test: Question Set - 06
1. A moving-coil permanent-magnet instrument can be used as ________ by using a low resistance shunt.
- (A) Ammeter
- (B) Voltmeter
- (C) Flux-meter
- (D) Ballistic galvanometer
2. _________ is an instrument which measures the insulation resistance of an electric circuit relative to earth and one another,
- (A) Tangent galvanometer
- (B) Meggar
- (C) Current transformer
- (D) None of the above
3. An induction wattmeter can be used for
- (A) Both D.C. and A.C.
- (B) D.C. only
- (C) A.C. only
- (D) Any of the above
4. Murray loop test can be used for location of
- (A) Ground fault on a cable
- (B) Short circuit fault on a cable
- (C) Both the ground fault and the short-circuit fault
- (D) None of the above
5. In an A.C. coordinate potentiometer, the currents in the phase and quadrature potentiometer are adjusted to be
- (A) Out of phase by 90°
- (B) Out of phase by 60°
- (C) Out of phase by 30°
- (D) Out of phase by 0°
6. For measuring a very high resistance we should use
- (A) Kelvin's double bridge
- (B) Wheat stone bridge
- (C) Meggar
- (D) None of the above
7. The function of shunt in an ammeter is to
- (A) By pass the current
- (B) Increase the sensitivity of the ammeter
- (C) Increase the resistance of ammeter
- (D) None of the above
8. Which of the following is an essential part of a motor meter?
- (A) An operating torque system
- (B) A braking device
- (C) Revolution registering device
- (D) All of the above
9. ________ instruments are those which measure the total quantity of electricity delivered in a particular time.
- (A) Absolute
- (B) Indicating
- (C) Recording
- (D) Integrating
10. In a low power factor wattmeter the pressure coil is connected
- (A) To the supply side of the current coil
- (B) To the load side of the current coil
- (C) In any of the two meters at connection
- (D) None of the above
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