Measurement and Instrumentation Question Bank - 2

Question: 6

A diode used as rectifier in ac voltmeter should have

(A) low forward current and low reverse current

(B) low forward current and high reverse current

(C) high forward current and high reverse current

(D) high forward current and low reverse current

Question: 7

The problem of electro-static coupling in a transformer is accurate at

(A) high load on the transformer

(B) low frequency

(C) power frequency

(D) high frequency

Question: 8

Limiting errors are

(A) random errors

(B) environmental errors

(C) manufacturer’s specification of instrumental error

(D) manufacturer’s specification of accuracy

Question: 9

In signal generators

(A) energy is converted from a simple d.c. source into a.c. energy at some specific frequency

(B) energy is created

(C) energy is generated

(D) all of the above

Question: 10

The instrument normally used to check the insulation resistance is

(A) tong tester

(B) megger

(C) ohm meter

(D) multimeter