1. What is name of the device used to the Presence of an electric current ?

Electrometer

Galvanometer

Voltmeter

Coulammeter

Answer: Galvanometer

Explanation:


2. The measurement range of an voltmeter can be increased by using a ?

High resistance in shunt

Low resistance in shunt

High resistance in series

Low resistance in series

Answer: High resistance in series

Explanation:


3. Which of the following is an Integrating instrument ?

Watt-hour meter

Ammeter

Voltmeter

Wattmeter

Answer: Watt-hour meter

Explanation:


4. Which of the following methods can not be used to measure capacitance ?

De Sauty's Bridge

Schering Bridge

Wien Bridge

Anderson's Bridge

Answer: Anderson's Bridge

Explanation:


5. Q-meter works on the principle of ?

series resonance

parallel resonance

mutual inductance

self inductance

Answer: series resonance

Explanation:


6. What does the CRT oscilloscope display ?

Voltage and Period

Current and Frequency

RMS Voltage and Current

Frequency and Voltage

Answer: Frequency and Voltage

Explanation:


7. The bridge which is used to measure values of resistance below 1 ohm is ?

Wheatstone bridge

Kelvin's Bridge

Maxwell's bridge

Hay's bridge

Answer: Kelvin's Bridge

Explanation:


8. The potentiometer wire should be of ?

high resistivity and low temperature coefficient

low resistivity and high temperature coefficient

high resistivity and high temperature coefficient

low resistivity and low temperature coefficient

Answer: high resistivity and high temperature coefficient

Explanation:


9. Moving Iron instruments can be used for: ?

Direct current and voltages

Alternating current and voltages

Radio frequency current

Both A and B

Answer: Both A and B

Explanation:


10. The meter suitable for only D.C, measurement ?

Moving iron type

Permanent magnet type

Electrodynamics type

Hot wire type

Answer: Permanent magnet type

Explanation: