MCQ
4521. 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
4522. For flat voltage profile system, voltage regulation is-
0%
100%
200%
50%
4523. In transmission lines distribution constants--
resistance
inductance and capacitance
inductance and resistance
both 1 and 2
4524. 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
4525. Proximity effect depends on--
frequency
distance between the conductors
relative permeability
all of the above
4526. 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
4527. Under over excitation synchronous phase modifier works as-
shunt capacitor
series capacitor
shunt reactor
any of the above
4528. Find the number of strands of ACSR conductor for 3-layer transmission line.
1
7
19
29
4529. Ferranti effect can be compensated by which of the following?
series capacitor
shunt capacitor
all of the above
none
4530. A 3-layer and diameter of each strand is d, then find the total diameter of ACSR conductor.
2d
d
3d
5d
4531. If sparsity of a 5 bus transmission line is 0.4. Find the number of transmission lines--
6
5
8
3
4532. Under excited synchronous phase modifier works as-
shunt capacitor
shunt reactor
series capacitor
any of the above
4533. Skin effect depends on-
frequency
conductivity
relative permeability
all of the above
4534. Transmission lines are transposed to reduce-
ferranti effect
skin effect
proximity effect
all of above
4535. Maximum power transfer capability of transmission line can be increased by-
Parallel transmission lines
Using series capacitance
Using bundled conductors
all of the above
4536. Stability of a transmission line can be increased by—
shunt capacitor
shunt reactor
series reactor
both 1 and 2
4537. Which of the following methods is/are used for reactive or voltage compensation?
shunt capacitor
generation excitation control
series capacitor
all of the above
4538. Maximum power transfer in a transmission line can be obtained by—
increasing voltage level
reducing reactance
either 1 or 2
none of the above
4539. If skin depth is more, then skin effect is--
more
less
either 1 or 2
none of the above
4540. Skin effective is more in case of
communication lines
same in both cases
power lines
none of the above