Instruments and measurements. Part – 5

41. Swamping resistance is used to compensate

A. Error due to temperature true variations

B. Error due to strong magnetic field

C. both (A) and (B)

D. none of these

42. The high torque to weight ratio in an analog indicating instrument indicates

A. High friction loss

B. Nothing related to friction loss

C. Low friction loss

D. None of these

43. Piezoelectric effect is carried out in

A. composite filter

B. crystal filter

C. PMMC instrument

D. moving iron type

44. The smallest change in measured variable to which instrument will respond is

A. Resolution

B. Accuracy

C. Precision

D. Sensitivity

45. The capacitance and loss angle of a given capacitors specimen are best measurer by

A. Scheving bridge

B. Maxwell bridge

C. Anderson bridge

D. Whatstone bridge

46. The resolution of an instrument is the

A. Minimum quantity it can measure

B. Maximum quantity it can measure

C. Maximum non-linearity

D. None of the above

47. Shunt strips are usually made of

A. Copper

B. Aluminium

C. Silver

D. Manganin

48. The following electrical measuring instrument depend on chemical effect for its action

A. Ammeter

B. Voltmeter

C. D.C. ampere-hour meter

D. None of the above

49. A.C. potentiometer can be used for the following

A. Voltmeter calibration

B. Ammeter calibration

C. Testing of energy meters and wattmeter

D. All of the above

50. The meter that is suitable for only direct current measurements is

A. Moving-iron type

B. Permanent-magnet type

C. Electrodynamic type

D. Hot-wire type