A. Should be non-magnetic
B. Most be of low temperature co-efficient
C. Should have low specific resistance
D. Should not be subjected to fatigue
E. All of the above
Related Mcqs:
- A __________ device prevents the oscillation of the moving system and enables the latter to reach its final position quickly___________?
A. deflecting
B. controlling
C. damping
D. any of the above - It is required to measure the true open circuit e.m.f. of a battery. The best device is_____________?
A. D.C. voltmeter
B. Ammeter and a known resistance
C. D.C. potentiometer
D. None of the above - Basically a potentiometer is a device for________________?
A. comparing two voltages
B. measuring a current
C. comparing two currents
D. measuring a voltage
E. none of the above - Wagner earthing device is used to eliminate errors due to________________?
A. electrostatic coupling
B. electromagnetic coupling
C. both A. and B.
D. none of the above - Which of the following are integrating instruments ?
A. Ammeters
B. Voltmeters
C. Wattmeters
D. Ampere-hour and watt-hour meters - Which of the following essential features is possessed by an indicating instrument ?
A. Deflecting device
B. Controlling device
C. Damping device
D. All of the above - Which of the following instruments indicate the instantaneous value of the electrical quantity being measured at the time at which it is being measured ?
A. Absolute instruments
B. Indicating instruments
C. Recording instruments
D. Integrating instruments - Which of the following meters are not used on D.C. circuits______________?
A. Mercury motor meters
B. Commutator motor meters
C. Induction meters
D. None of the above - 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 - Which of the following devices should be used for accurate measurement of low D.C. voltage ?
A. Small range moving coil voltmeter
B. D.C. potentiometer
C. Small range thermocouple voltmeter
D. None of the above
