Measurement and Instruments Multiple Choice Questions & Answers Pdf - 2

Question: 6

Wagner earth devices in AC bridge circuits are used for

(A) eliminating all the node to earth capacitance

(B) minimizing the effect of inter component capacitance

(C) eliminating the effect of stray capacitance

(D) shielding all the bridge elements from external magnetic field

Question: 7

A static movement in an electrodynamometer type of instrument is used for

(A) eliminating error on the account of low torque to weight ratio

(B) increasing the operating torque of the instruments

(C) providing eddy current damping

(D) eliminating errors on account of external magnetic fields

Question: 8

The Ohm per volt rating on ac ranges as compared to the same rating on dc ranges is

(A) more

(B) equal

(C) less

(D) none of these

Question: 9

A sampling CRO is used for

(A) low frequencies

(B) high frequencies

(C) very low frequencies

(D) very high frequencies

Question: 10

A random noise generator produces a sign

(A) has an unpredictable power spectrum

(B) which has no periodic frequency

(C) whose amplitude varies randomly

(D) none of the above