Measurements and Instrumentation

56

The accuracy of an instrument is determined by

A. closeness of indicated value to the actual value
B. repeatability of measured value
C. speed with which the reading approaches final value
D. least value which can be measured

57

In a CRO the Y plates are oriented

A. horizontally
B. vertically
C. at an angle of 20° of horizontal
D. at an angle of 70° of horizontal

58

Schering bridge is used to measure

A. capacitance and dielectric loss
B. inductance
C. resistance
D. mutual inductance

59

A D' Arsonval galvanometer is a

A. moving coil instrument
B. moving iron instrument
C. dynamometer instrument
D. induction instrument

60

The phenomenon of creep occurs in

A. energy meters
B. voltmeters
C. ammeters
D. wattmeters