Electrical Engineering Multiple Choice – Electrical Measurement MCQs Part 4
Contents
- 1 A single-phase wattmeter operating on 230 V and 5 A for 5 hours makes 1940 revolutions. Meter constant in revolutions is 400. The power factor is
- 2 The spring material employed in a spring control device should
- 3 A MISC meter is not recommended for DC measurement since
- 4 A moving iron ammeter may be compensated for frequency errors using
- 5 The meter which has a linear scale
A single-phase wattmeter operating on 230 V and 5 A for 5 hours makes 1940 revolutions. Meter constant in revolutions is 400. The power factor is
A single phase wattmeter operating on 230 V and 5 A for 5 hours makes 1940 revolutions. Meter constant in revolutions is 400. The power factor is
- 0.36
- 0.55
- 0.84
- 1.36
Correct answer: 3. 0.84
The spring material employed in a spring control device should
The spring material employed in a spring control device should
- Be nonmagnetic material
- Have low temperature coefficient
- Have low specific resistance
- All of these
Correct answer: 4. All of these
A MISC meter is not recommended for DC measurement since
A MISC meter is not recommended for DC measurement since
- Error is high due to eddy current effect
- Error is high due to hysteresis effect
- Meter does not respond to DC signals
- Meter is calibrated for AC and it’s error for DC would be high
Correct answer: 2. Error is high due to hysteresis effect
A moving iron ammeter may be compensated for frequency errors using
A moving iron ammeter may be compensated for frequency errors using
- A series inductance
- A shunt resistance
- Series resistance
- Shunt capacitance
Correct answer: 4. Shunt capacitance
The meter which has a linear scale
The meter which has a linear scale
- Hot wore meter
- Moving coil meter
- Moving iron meter
- Thermocouple meter
Correct answer: 2. Moving coil meter