MCQ
4521. For flat voltage profile system, voltage regulation is-
0%
100%
200%
50%
4522. If sparsity of a 5 bus transmission line is 0.4. Find the number of transmission lines--
6
5
8
3
4523. Maximum power transfer in a transmission line can be obtained by—
increasing voltage level
reducing reactance
either 1 or 2
none of the above
4524. A 3-layer and diameter of each strand is d, then find the total diameter of ACSR conductor.
2d
d
3d
5d
4525. Stability of a transmission line can be increased by—
shunt capacitor
shunt reactor
series reactor
both 1 and 2
4526. Skin effect depends on-
frequency
conductivity
relative permeability
all of the above
4527. If skin depth is more, then skin effect is--
more
less
either 1 or 2
none of the above
4528. Maximum power transfer capability of transmission line can be increased by-
Parallel transmission lines
Using series capacitance
Using bundled conductors
all of the above
4529. Under over excitation synchronous phase modifier works as-
shunt capacitor
series capacitor
shunt reactor
any of the above
4530. Apart from the skin effect the non-a of the current distribution is also caused by--
bundled conductors
ferranti effect
proximity effect
all of the above
4531. Which of the following method is used for changing power factor from leading to lagging?
shunt capacitor
series capacitor
shunt reactor
any of the above
4532. Transmission lines are transposed to reduce-
ferranti effect
skin effect
proximity effect
all of above
4533. Which of the following methods is/are used for reactive or voltage compensation?
shunt capacitor
generation excitation control
series capacitor
all of the above
4534. Proximity effect depends on--
frequency
distance between the conductors
relative permeability
all of the above
4535. Skin effective is more in case of
communication lines
same in both cases
power lines
none of the above
4536. Find the number of strands of ACSR conductor for 3-layer transmission line.
1
7
19
29
4537. Ferranti effect will not occur in which of the following transmission lines-
long transmission lines
short transmission lines
medium transmission lines
all of the above
4538. Under excited synchronous phase modifier works as-
shunt capacitor
shunt reactor
series capacitor
any of the above
4539. In transmission lines distribution constants--
resistance
inductance and capacitance
inductance and resistance
both 1 and 2
4540. Ferranti effect can be compensated by which of the following?
series capacitor
shunt capacitor
all of the above
none