Electronic Measurements & Instruments

Which of the following meter is used to measure the relationship between the generator frequencies

• Wattmeter

• Rotameter

• Tachometer

• Synchroscope

Which of the following quantities cannot be measured using Multi-Meter:

• Resistance

• Voltage

• Current

• Power Factor

In a Circuit, Ammeter should be always connected in ____ arrangement

• Series

• Parallel

• Either in Series or in Parallel

• Can be connected in booth

Wattmeter is used to measure which of the following:

• Both AC Power and DC Power

• DC Power only

• AC Power only

Ohm meter is used to measure which of the following quantities:

• Reactive Power

• Power Factor

• Insulation Resistance

• Circuit Resistance

Barometer is used to measure air pressure:

• True

• False

Which of the following meter is used to measure speed in electrical machine

• No option is Correct

• Tachometer

• Rotameter

• Synchroscope

Intensity of light is used to measured by which of the following:

• Polarimeter

• Light meter

• Photometer

• Lux meter

The deflection θ is related to the electric current I in a galvanometer by the relation

• I ∝ θ

• I ∝ tan θ

• I ∝ sin θ

• I ∝ cos θ

A moving coil galvanometer carries a current I and the magnetic field B is radial. The coil has N number of turns and an effective area A. The torque acting on the coil of a moving coil galvanometer is given by

• NA²B²I

• NABI²

• NABI

• N²ABI