1. If the maximum value of current is 5√2 A, what will be the value of RMS current?

A. 10 A

B. 5 A

C. 15 A

D. 25 A

2. If Im is the maximum value of a sinusoidal voltage, what is the instantaneous value?

A. i = Im/2

B. i = Imsinθ

C. i = Imcosθ

D. i = Imsinθ or i = Imcosθ

3. Average value of current over a half cycle is?

A. 0.67Im

B. 0.33Im

C. 6.7Im

D. 3.3Im

4. What is the correct expression for the RMS value of current?

A. Irms = Im/2

B. Irms = Im/√2

C. Irms = Im/4

D. Irms = Im

5. Average value of current over a full cycle is?

A. 0.67Im

B. 0

C. 6.7Im

D. 3.3Im

6. What is the correct expression for the form factor?

A. Irms × Iav

B. Irms / Iav

C. Irms + Iav

D. Irms – Iav

7. For a direct current, the RMS current is ________ the mean current.

A. Greater than

B. Less than

C. Equal to

D. Not related to

8. For a direct current, the RMS voltage is ________ the mean voltage.

A. Greater than

B. Less than

C. Equal to

D. Not related to

9. What is the value of the form factor for the sinusoidal current?

A. π/2

B. π/4

C. 2π

D. π/√2

10. If the maximum value of the current is 5√2 A, what will be the value of the average current?

A. 10/π A

B. 5/π A

C. 15/π A

D. 25/π A