Question 21 : If the maximum value of the current is 5v2 A, what will be the value of the average current?
1. 10/p A
2. 5/p A
3. 15/p A
4. 25/p A
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Question 22 : What is the value of the form factor for sinusoidal current?
1. p/2
2. p/4
3. 2p
4. p/v2
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Question 23 : For a direct current, the rms voltage is ________ the mean voltage.
1. Greater than
2. Less than
3. Equal to
4. Not related to
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Question 24 : For a direct current, the rms current is ________ the mean current.
1. Greater than
2. Less than
3. Equal to
4. Not related to
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Question 25 : What is the correct expression for the form factor?
1. I_rms * I_av
2. I_rms / I_av
3. I_rms + I_av
4. I_rms – I_av
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Question 26 : Average value of current over a full cycle is?
1. 0.67Im
2. 0
3. 6.7Im
4. 3.3Im
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Question 27 : What is the correct expression for the rms value of current?
1. Irms=Im/2
2. Irms=Im/√2
3. Irms=Im/4
4. Irms=Im
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Question 28 : Average value of current over a half cycle is?
1. 0.67Im
2. 0.33Im
3. 6.7Im
4. 3.3Im
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Question 29 : If Im is the maximum value of a sinusoidal voltage, what is the instantaneous value?
1. i=Im/2
2. i=Imsin?
3. i=Imcos?
4. i=Imsin? or i=Imcos?
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Question 30 : If maximum value of current is 5v2 A, what will be the value of RMS current?
1. 10 A
2. 5 A
3. 15 A
4. 25 A
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