Measurement and Instrumentation MCQ Multiple Choice Questions - Page 4 for Practice

Q: 46. The desirable static characteristics of a measuring system are

Correct Answer is: accuracy, sensitivity and reproducibility

Q: 47. The disc of an instrument using eddy current damping should be of

Correct Answer is: conducting and non-magnetic material

Q: 48. The electrical power to a meggar is provided by

Correct Answer is: permanent magnet D.C. generator

Q: 49. The function of shunt in an ammeter is to

Correct Answer is: by pass the current

Q: 50. The gravity controlled instrument has crowded scale because current is proportional to

Correct Answer is: sine of deflection angle

Q: 51. The household energy meter is

Correct Answer is: an integrating instrument

Q: 55. The power factor of a single phase load can be calculated if the instruments available are

Correct Answer is: one voltmeter, one ammetqr and one wattmeter

Q: 56. The power of a n-phase circuit can be measured by using a minimum of

Correct Answer is: (n - 1) wattmeter elements

Q: 57. The pressure coil of a wattmeter should be connected on the supply side of the current coil when

Correct Answer is: load impedance is high

Q: 58. The principle on which vector voltmeter is based is

Correct Answer is: that it measures the amplitude of a single at two points and at the same time measures their phase difference

Measurement and Instrumentation MCQ Questions for Practice

46. The desirable static characteristics of a measuring system are

accuracy and reproducibility
accuracy, sensitivity and reproducibility
drift and dead zone
static error

47. The disc of an instrument using eddy current damping should be of

conducting and magnetic material
non-conducting and magnetic material
conducting and non-magnetic material
none of the above

48. The electrical power to a meggar is provided by

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

49. The function of shunt in an ammeter is to

by pass the current
increase the sensitivity of the ammeter
increase the resistance of ammeter
none of the above

50. The gravity controlled instrument has crowded scale because current is proportional to

balancing weight
deflection angle
sine of deflection angle

51. The household energy meter is

an indicating instrument
a recording instrument
an integrating instrument
none of the above

52. The multiplier and the meter coil in a voltmeter are in

series
parallel
series-parallel
none of the above

53. The operating voltage of a meggar is about

6 V
12 V
40 V
100 V

54. The pointer of an indicating instrument should be

very light
very heavy
either a or b
neither a nor b

55. The power factor of a single phase load can be calculated if the instruments available are

one voltmeter and one ammeter
one voltmeter, one ammetqr and one wattmeter
one voltmeter, one ammeter and one energy meter
any of the above

56. The power of a n-phase circuit can be measured by using a minimum of

(n - 1) wattmeter elements
n wattmeter elements
(n + 1) wattmeter elements
2n wattmeter elements

57. The pressure coil of a wattmeter should be connected on the supply side of the current coil when

load impedance is high
load impedance is low
supply voltage is low
none of the above

58. The principle on which vector voltmeter is based is

that it works on the principle of complex variation
that it measures the response of linear ramp voltage
same as digital meter
that it measures the amplitude of a single at two points and at the same time measures their phase difference

59. The ratio of maximum displacement deviation to full scale deviation of the instrument is called

static sensitivity
dynamic deviation
linearity
precision or accuracy

60. The rectifier instrument is not free from

temperature error
wave shape error
frequency error
all of the above