Power System Planning and Design (2180903) MCQs

MCQs of Design of distribution systems

Showing 1 to 10 out of 22 Questions
1.
A transmission and distribution engineer needed to design the sub transmission substation. The tapping component needed is
(a) Feeder
(b) Distributor
(c) Transmitter
(d) Tap-changing transformer
Answer:

Option (a)

2.
While designing the distribution to locality of one lac population with medium dense load requirement, system employed is
(a) Radial system
(b) Parallel system
(c) Ring main system
(d) Any of above
Answer:

Option (a)

3.
A _________ distribution system is more reliable than the ______ distribution system.
(a) Parallel, radial
(b) Parallel, ring main
(c) Radial, parallel
(d) Ring main, parallel
Answer:

Option (a)

4.
A DC 2-wire system with mid-point earthed having cross-sectional area of each conductor be ‘a’ and resistance ‘R1’. If the DC tow wire replaces the system, then the ratio of volume of each conductor V1/V2
(a) 0.25
(b) 0.5
(c) 2
(d) 4
Answer:

Option (a)

5.
While designing the distribution sub stations by the designer, it is required to use the _______ for the discrete power tapping.
(a) Power transformer
(b) Distribution transformer
(c) Feeder
(d) Distributor
Answer:

Option (d)

6.
A DC 2-wire system with mid-point earthed having cross-sectional area of each conductor be ‘a’ and resistance ‘R1’. If this is replaced by monopolar system, then saving of copper is
(a) 0.25
(b) 0.5
(c) 2
(d) 4
Answer:

Option (b)

7.
For the single phase 2-wire system, the maximum voltage between the outer wires and earth is
(a) 2V
(b) V
(c) 1.41V
(d) 0.707V
Answer:

Option (d)

8.
For a 440V distribution system the maximum voltage at the midpoint
(a) 155.6V
(b) 220V
(c) 311.1V
(d) 622V
Answer:

Option (a)

9.
If a 2-wire ac single phase distribution system operating at ‘P’ MW and ‘V’ kV, operating at the power factor of 0.8, then the current in the outer wire in kA is
(a) 0.088P/V
(b) 0.880P/V
(c) 1.131P/V
(d) 1.880P/V
Answer:

Option (b)

10.
If a 2-wire ac single phase distribution system operating at ‘30’ MW and ‘315’ kV, operating at the power factor of 0.8, then the current in the outer wire in kA is
(a) 0.083
(b) 1.131
(c) 8.380
(d) 83.800
Answer:

Option (d)

Showing 1 to 10 out of 22 Questions