MCQ 1)When a line is loaded below its SIL, it acts like: 1. Shunt reactor absorb
ID: 2083002 • Letter: M
Question
MCQ
1)When a line is loaded below its SIL, it acts like:
1. Shunt reactor absorbing MUAR from the system.
2. Shunt capacitor supplying MUAR to the system.
3. Shunt capacitor supplying MUAR to the system.
4. Shunt reactor absorbing MUAR from the system.
2) If any inductive load is connected at the sending end of the line, it will support the synchronous generators:
1. To absorb the line-charging reactive power.
2. To absorb the load-charging reactive power.
3. To supply the line-charging reactive power.
4. To supply the load-charging reactive power.
3)The change in electrical properties of a transmission line in order to increase its power transmission capability is known as:
1. Load compensation.
2. Line compensation.
3. Load synchronism.
4. Line synchronism.
4)Apply series capacitors to reduce XL and thereby reduce at the fundamental frequency. This method is called:
1. Line-length compensation (or) -compensation.
2. Compensation by sectioning.
3. Load balancing.
4. All the above.
5)Series compensation results in:
1. Increase in maximum transferable power capacity.
2. Decrease in transmission angle for considerable amount of power transfer.
3. Increase in virtual surge impedance loading.
4. All the above.
6)For a heavy loading condition, a flat voltage profile can be obtained by:
1. Series compensation.
2. Shunt compensation.
3. (a) or (c).
4. None.
7)Inductive shunt compensation __________ the virtual surge impedance and __________ the virtual SIL of the line:
1. Decreases, decreases.
2. Decreases, increases.
3. Increases, decreases.
4. Decreases, increases.
8)If the inductive shunt compensation is 100% then:
1. Flat voltage profile exists at zero loads.
2. Ferranti effect can be eliminated.
3. Both (a) and (b).
4. None.
8)Sub-synchronous resonance (SSR) is treated as __________ type of phenomenon.
1. Electrical.
2. Mechanical.
3. Combined electrical–mechanical.
4. Damped frequency resonance.
9)UPFC is able to perform:
1. Voltage support.
2. Power flow control.
3. Improved stability.
4. All.
10)The voltage stability analysis is carried out by which power flow-based method?
1. P–V curves.
2. Q–V curves.
3. Both (a) and (b).
4. None.
Explanation / Answer
Answers : 1) 2
2) 1
3) 2
. 4) 4
. 5) 4
. 6) 3
. 7) 3
. 8) 1
. 9) 4
. 10) 3
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