In a meggar controlling torque is provided by______________?

Related Mcqs:

1. In a portable instrument, the controlling torque is provided by_____________?

   A. spring B. gravity C. eddy currents D. all of the above...

2. The electrical power to a meggar is provided by________________?

   A. battery B. permanent magnet D.C. generator C. AC. generator D. any of the above...

3. The operating voltage of a meggar is about_______________?

   A. 6 V B. 12 V C. 40 V D. 100 V...

4. In majority of instruments damping is provided by______________?

   A. fluid friction B. spring C. eddy currents D. all of the above...

5. In an energy meter braking torque is produced to________________?

   A. safe guard it against creep B. brake the instrument C. bring energy meter to stand still D. maintain steady speed and equal to driving torque...

6. Which of the following devices may be used for extending the range of instruments ?

   A. Shunts B. Multipliers C. Current transformers D. Potential transformers E. All of the above...

7. 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...

8. 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...

9. In a 3-phase power measurement by two wattmeter method the reading of one of the wattmeter was zero. The power factor of the load must be_______________?

   A. unity B. 0.5 C. 0.3 D. zero...

10. If an instrument has cramped scale for larger values, then it follows________________?

    A. square law B. logarithmic law C. uniform law D. none of the above...