Measurements

horizontal mounted instruments

vertical mounted instruments

both in horizontally and vertically mounted instruments

primary instrument

secondary instrument

absolute instrument

phosphor bronze

Energy meter

greater than

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

deflecting torque is zero

controlling torque is zero

damping torque is zero

damping torque act only in pointer motion

Low temperature co-efficient

High temperature co-efficient

Zero temperature co-efficient

cramped at the begining and at the end

it is spring controlled

Ammeters only

Voltmeters only

Both voltmeters and ammeters

low resistance

insulation resistance

1 ohm and below

AC and DC power

meter bridge

both ac and dc

none of the above

under damped

critically damped

increase ventilation

reduce the weight of disc

eliminating creeping on no load

increase deflecting torque

anderson's bridge

schering's bridge

hay's bridge

wein's bridge

heating effect

magnetic effect

chemical effect

electrostatic effect

maximum value

average value

across the load

across supply

across current coil

none of these

reduce resistance

prevent creeping

increase torque

reduce weight

low resistance

potential transformer

current transformer

clamp on ammeter

Results

Measurements

#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?

#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…..?

#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…..

#12. When the pointer of an indicating instrument is in the final position ……?

#13. Permanent magnet moving iron instrument can be used for…..?

#14. Controll spring in an indicating instrument have….?

#15. The permanent magnet moving coil instrument scale is?

#16. Electrostatic instruments are used as…..?

#17. Kelvins bridge is used for measure…..?

#18. Low resistance means…?

#19. Which quantity can be measured by using dynamometer type wattmeter?

#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…..?

#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….?

#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……?

#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….?

Results

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