Basic Electrical Engineering MCQs Part 2

Basic Electrical Engineering MCQs Part 2

A kettle is rated 230 V, 20 kW AC. The value 230 V is

A kettle is rated 230 V, 20 kW AC. The value 230 V is:

1. Average Voltage
2. Peak Voltage
3. RMS Voltage
4. None of the above

Correct answer: 3. RMS voltage

For same peak value which of the following wave will have the highest RMS value

For same peak value which of the following wave will have the highest RMS value:

1. Triangular wave
2. Sine wave
3. Square wave
4. Half wave rectified sine wave

Correct answer: 3. Square wave

Which of following element has unity power factor

Which of the following element has unity power factor:

1. Inductance
2. Capacitance
3. Resistance
4. Both 1 and 2

Correct answer: 3. Resistance

Which of the following is correct regarding the time period of a waveform

Which of the following is correct regarding the time period of a waveform:

1. It is same as frequency                                          
2. It is expressed in amperes
3. It is defined as the time required to complete one cycle
4. None of these

Correct answer: 3. It is defined as the time required to complete one cycle

The voltage level of domestic supply at our homes is 230 V. The figure 230 is

The voltage level of domestic supply at our homes is 230 V. The figure 230 is

1. Mean value
2. Peak value
3. RMS Value
4. Average value

Correct answer: 3. RMS value