Control of the reactive power flow in the circuit is essential for maintaining the good voltage regulation.

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

Which of the following is/are the advantages of using a control chart for inspection? (i) A control chart indicates whether the process is in control or out of control. (ii) A control chart determines process variability. (iii) A control chart ensures product quality. (iv) Scrap or percentage reduction can be reduced by taking the necessary actions in time against the warnings indicated by control charts. (v) Control charts build up the reputation of the organization through customer’s satisfaction. (vi) The control chart can detect the unusual variations taking place in a process.

A

i, ii, iii only

B

i, iv, v only

C

i, ii, iii, iv, v and vi

D

iv, v and vi

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

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

Without proper reactive shunt compensation techniques, an increase in real power transmission will certainly result in an increase of reactive power demand at the end-voltage generators.

A

True

B

False

A single phase 50 hz, generator supplies an inductive load of 5 MW at a power factor of 0.8 lagging using OHTL over 20 km. The resistance and reactance are 0.39Ω and 3.96 Ω. The voltage at receiving station is maintained at 10 KV. The sending end voltage is 11.68 kV. The new sending end voltage at the half the voltage regulation is _____________

A

10.84 kV

B

11.84 kV

C

8.84 kV

D

16.2 kV

Referring this figure, on the falling edge.
Time Response of Reactive Circuits mcq question image

A

The resistor voltage drops to -5 V and then goes back to zero exponentially

B

The resistor voltage jumps to -5 V and then goes back to zero exponentially

C

The capacitor voltage remains constant

D

The resistor voltage jumps to +5 V and then decreases exponentially to zero

The apparent power drawn by an A.C. circuit is 10 kVA and active power is 8 kW. The reactive power in the circuit is

A

4 kVAR

B

6 kVAR

C

8 kVAR

D

16 kVAR

Good 'Y' is the substitute for good 'X' if
1. A fall in the price of good X leads to the fall in the marginal utility of good Y.
2. A fall in the price of good X leads to the fall in the quantity purchased of good Y. Select the correct answer

A

Only 1

B

Only 2

C

Both 1 and 2

D

Neither 1 nor 2

Control of the reactive power flow in the circuit is essential for maintaining the good voltage regulation.

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