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Measurements related questions.
#1. The pointer of an indicating instrument is generally made of.....?
#2. The material of wires used for making resistance standard is usually?
#3. Fluid friction damping can be used in?
horizontal mounted instruments
vertical mounted instruments
both in horizontally and vertically mounted instruments
#4. The tangent galvanometer is example of which type instrument?
#5. The control spring of the indicating instrument is generally made of.....?
#6. Permanent magnet moving coil instrument can be used for.....?
ac and dc
#7. Torque / weight ratio of an instrument indicates?
#8. Example of integrating type instrument is?
#9. The controlling torque of an indicating instrument ....... as the deflecting torque of the moving system?
#10. Which material used for making swamping resistance of a PMMC instrument?
#11. Spiral springs are used in instruments to.....
provide controlling torque
lead the current to moving coil as well as to provide the controlling torque
provide deflecting torque as well as to provide controlling torque
#12. When the pointer of an indicating instrument is in the final position ......?
deflecting torque is zero
controlling torque is zero
damping torque is zero
damping torque act only in pointer motion
#13. Permanent magnet moving iron instrument can be used for.....?
AC and DC
#14. Controll spring in an indicating instrument have....?
Low temperature co-efficient
High temperature co-efficient
Zero temperature co-efficient
#15. The permanent magnet moving coil instrument scale is?
cramped at the begining and at the end
it is spring controlled
#16. Electrostatic instruments are used as.....?
Both voltmeters and ammeters
#17. Kelvins bridge is used for measure.....?
#18. Low resistance means...?
upto 10 ohm
1 ohm and below
upto 50 ohm
#19. Which quantity can be measured by using dynamometer type wattmeter?
AC and DC power
#20. Instrument used to measure very high value of resistance is.....?
#21. A clip on meter is used for measure.....?
#22. The energy meter disc completes 800 revoutions in 8 minute when 2kW load is connected. Which is the meter constant of the meter?
#23. Moving coil instruments are use.....?
both ac and dc
none of the above
#24. If the pointer of measuring instrument moves quickly to its final deflected position, it is .....?
#25. Tong tester is used to measure.......?
#26. Two holes are drilled in the disc on a diameter of energy meter to....?
reduce the weight of disc
eliminating creeping on no load
increase deflecting torque
#27. The AC bridge that used for measurement of dielectric loss of a capacitor is....?
#28. A moving coil instruments works on....?
#29. The current transformer steps up....?
#30. When a moving iron instrument is connected in an AC circuit it indicates.....?
#31. The moving coil dynamometer type wattmeter is connected......?
across the load
across current coil
none of these
#32. Hols are provided in the aluminium disc of an energy meter is to....?
#33. Kelvin bridge is used to measure....?
#34. The instrument used for measuring current in a current carrying conductor without interrupting the circuit is called....?
clamp on ammeter
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