Measurement and Instrumentation MCQ Multiple Choice Questions - Page 3 for Practice

Q: 31. In order to achieve high accuracy, the slide wire of a potentiometer should be

Correct Answer is: as long as possible

Q: 34. Instrument transformers are

Correct Answer is: both a and b

Q: 36. It is required to measure the true open circuit e.m.f. of a battery. The best device is

Correct Answer is: D.C. potentiometer

Q: 37. Most common form of A.C. meters met with in every day domestic and industrial installations are

Correct Answer is: induction type single phase energy meters

Q: 38. Most sensitive galvanometer is

Correct Answer is: spot ballistic galvanometer

Q: 39. Murray loop test can be used for location of

Correct Answer is: both the ground fault and the short-circuit fault

Q: 40. Operating torques in analogue instruments are

Correct Answer is: deflecting, control and damping

Q: 41. Resistances can be measured with the help of

Correct Answer is: ohmmeters and resistance bridges

Q: 43. Systematic errors are

Correct Answer is: all of the above

Q: 44. The adjustment of position of shading bands, in an energy meter is done to provide

Correct Answer is: friction compensation

Measurement and Instrumentation MCQ Questions for Practice

31. In order to achieve high accuracy, the slide wire of a potentiometer should be

as long as possible
as short as possible
neither too small not too large
very thick

32. In Weston synchronoscope the moving coil is connected across

bus-bars
incoming alternator
fixed coils
any of the above

33. Induction type single phase energy meters measure electric energy in

34. Instrument transformers are

potential transformers
current transformers
both a and b
power transformers

35. is an instrument which measures the insulation resistance of an electric circuit relative to earth and one another

Tangent galvanometer
Meggar
Current transformer
None of the above

36. It is required to measure the true open circuit e.m.f. of a battery. The best device is

D.C. voltmeter
Ammeter and a known resistance
D.C. potentiometer
None of the above

37. Most common form of A.C. meters met with in every day domestic and industrial installations are

mercury motor meters
commutator motor meters
induction type single phase energy meters
all of the above

38. Most sensitive galvanometer is

elastic galvanometer
vibration galvanometer
Duddlb galvanometer
spot ballistic galvanometer

39. Murray loop test can be used for location of

ground fault on a cable
short circuit fault on a cable
both the ground fault and the short-circuit fault
none of the above

40. Operating torques in analogue instruments are

deflecting and control
deflecting and damping
deflecting, control and damping
vibration and balancing

41. Resistances can be measured with the help of

wattmeters
voltmeters
ammeters
ohmmeters and resistance bridges

42. Standard resistor is made from

platinum
maganin
silver
nichrome

43. Systematic errors are

instrumental errors
environmental errors
observational errors
all of the above

44. The adjustment of position of shading bands, in an energy meter is done to provide

friction compensation
creep compensation
braking torque
none of the above

45. The chemical effect of current is used in

D.C. ammeter hour meter
D.C. ammeter
D.C. energy meter
none of the above