Transmission And Distribution Part 7
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Attempt Free Transmission And Distribution Part 7 Here. Read The Important Electrical MCQ From Below.
Q1. If the height of transmission tower is increased, which of the following; parameters is likely to change ?
A. Capacitance
B. Inductance
C. Resistance
D. All of the above
Ans. A
Q2. To increase the capacity of a transmission line for transmitting power which of the following must be decreased ?
A. Capacitance
B. Line inductance
C. Voltage
D. All of the above
Ans. B
Transmission And Distribution Part 7
Q3. The ground ring transmission lines are used to
A. reduce the transmission losses
B. reduce the earth capacitance of the lowest unit
C. increase the earth capacitance of the lowest unit
D. none of the above
Ans. B
Q4. Ground wire is used to
A. avoid overloading
B. give the support to the tower
C. give good regulation
D. connect, a circuit conductor or other device to an earth-plate
Ans. D
Q5. Overhead system can be designed for operation upto
A. 11 kV
B. 33 kV
C. 66 kV
D. 400 kV
Ans. D
Transmission And Distribution Part 7
Q6. The phenomenon of rise in voltage at the receiving end of the open-circuited or lightly loaded line is called the
A. Seeback effect
B. Ferranti effect
C. Raman effect
D. none of the above
Ans. B
Q7. Due to which of the following reasons the cables should not, be operated too hot ?
A. The oil may loose its viscosity and it may start drawing off from higher levels
B. Expansion of the oil may cause the sheath to burst
C. Unequal expansion may create voids in the insulation which will lead to ionization
D. All of the above
Ans. D
Q8. The conductors of the overhead lines are
A. solid
B. stranded
C. both solid and stranded
D. none of the above
Ans. B
Q9. The material generally used for armour of high voltage cables is
A. aluminium
B. steel
C. brass
D. copper
Ans. B
Q10. A uniformly-loaded D.C. distributor is fed at both ends with equal voltages. As compared to a similar distributor fed at one end only, the drop at the middle point is
A. one-fourth
B. one-third
C. one-half
D. twice
Ans. A
