Range Extension MCQs

Practice Range Extension MCQs with four options, answers and explanations for focused Electronics & Telecommunication Engineering revision.

Question 1

Measurements & InstrumentationRange Extension

To convert a sensitive galvanometer or meter movement into a higher-range ammeter, a low resistance is connected?

Show AnswerHide Answer Report an error

Correct Answer: A. In parallel as a shunt

Explanation: A low-value shunt bypasses most of the measured current around the sensitive meter movement.

Reference: Standard measurements and instrumentation: range extension

Question 2

Measurements & InstrumentationRange Extension

Show AnswerHide Answer Report an error

Correct Answer: A. In series with the movement

Explanation: A series multiplier resistance limits current through the meter movement at higher applied voltages.

Reference: Standard measurements and instrumentation: range extension

Question 3

Measurements & InstrumentationRange Extension

Show AnswerHide Answer Report an error

Correct Answer: B. 9.9 kohm

Explanation: Total resistance required is V/I=10/0.001=10 kohm. Subtracting the 100 ohm movement resistance gives 9.9 kohm.

Reference: Standard measurements and instrumentation: range extension

Question 4

Measurements & InstrumentationRange Extension

Show AnswerHide Answer Report an error

Correct Answer: A. 0.100 ohm

Explanation: Meter voltage at full scale is 0.001×100=0.1 V. Shunt current is 0.999 A, so Rsh=0.1/0.999≈0.100 ohm.

Reference: Standard measurements and instrumentation: range extension