Electrical measurement and instrumentation refers to the use of instruments (such as voltmeters, ammeters, oscilloscope) for measuring electrical units and quantities such as voltage, current, and, resistance.
A voltmeter connects in
A voltmeter connects in:
- Series
- Parallel
- Both of these
- Any of above
Correct answer: 2. Parallel
The ammeter connects in
The ammeter connects in:
- Series
- Parallel
- Both of these
- Any of above
Correct answer: 1. Series
The loading effect of voltmeter is reduced using
The loading effect of voltmeter is reduced using:
- Low internal resistance
- Medium internal resistance
- High internal resistance
- None of these
Correct answer: 3. High internal resistance
Ammeter loading effects are reduced using
Ammeter loading effects are reduced using:
- Low internal resistance
- Medium internal resistance
- High internal resistance
- None of these
Correct answer: 1. Low internal resistance
The psophometer is used to measure
The psophometer is used to measure:
- AF signal level
- Speed of motors
- Q factor of circuits
- Frequency spectrum
Correct answer: 1. AF signal level
The pointer of an indicating instrument should be made of
The pointer of an indicating instrument should be made of:
- Copper
- Aluminum
- Silver
- Steel
Correct answer: 2. Aluminum
Aluminum is light and it doesn’t increase the weight of the moving system, therefore the pointer of indicating instruments should be made of aluminum
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