A power factor of 1 indicates a purely reactive circuit, and a power factor of 0 indicates a purely resistive circuit.

Given below are certain statements regarding the average power dissipated in different types of circuits. Identify the correct option. A. Maximum power dissipation occurs in the case of the resistive circuit and when the LCR circuit is at resonance. B. In the case of a purely inductive circuit, no power is dissipated. C. In the case of the RC circuit, power is dissipated in resistor and capacitor both.

A

Both A and B are correct

B

Both B and C are correct

C

Both A and C are correct

D

Only A is correct

If A indicates >; B indicates <; C indicates = ; D indicates + ; E indicates -; F indicates × ; G indicates /: then which of the following option is true?

A

(35E15) C (5f5) A (20G4)

B

(5D6) A (4D3) A (3D3)

C

(27G3) C (75G5) C (6F2)

D

(5D6) A (6D12) A (13D6)

Under the condition for 3 phase alternator, maximum active power output, the delivered reactive power output is ________ while under maximum reactive power output, the delivered reactive power is ________

A

negative, negative

B

positive, negative

C

negative, positive

D

positive, positive

Referring this circuit, determine the maximum output voltage when a single pulse is applied as shown. The total resistance is 60 Ω.
Time Response of Reactive Circuits mcq question image

Time Response of Reactive Circuits mcq question image

A

2.73 V

B

27.33 V

C

30 V

D

2.67 V

Referring to the give circuit, the output will.
Time Response of Reactive Circuits mcq question image

A

Decay to zero at the end of the pulse

B

Reach 6 V at the end of the pulse

C

Reach 3.78 V at the end of the pulse

D

Reach 5.16 V at the end of the pulse

The power for a purely resistive circuit is zero when?

A

Current is zero

B

Voltage is zero

C

Both current and voltage are zero

D

Either current or voltage is zero

In case of purely resistive circuit, the average power is?

A

VmIm

B

VmIm/2

C

VmIm/4

D

VmIm/8

In an RL circuit, part of the power is resistive and part is reactive.

A

True

B

False

In a transformer, the resistive drop is 2% and reactive drop is 5%. What will be its regulation at full load unity power factor?

A

1%

B

5%

C

2%

D

7%

Referring to the bellow figure, determine the voltage level that the output will reach during the pulse.
Time Response of Reactive Circuits mcq question image

A

0 V

B

15 V

C

6.3 V

D

9.45 V

A power factor of 1 indicates a purely reactive circuit, and a power factor of 0 indicates a purely resistive circuit.

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