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# Test: Power Systems - 2

## 25 Questions MCQ Test Electrical Engineering SSC JE (Technical) | Test: Power Systems - 2

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This mock test of Test: Power Systems - 2 for Electrical Engineering (EE) helps you for every Electrical Engineering (EE) entrance exam. This contains 25 Multiple Choice Questions for Electrical Engineering (EE) Test: Power Systems - 2 (mcq) to study with solutions a complete question bank. The solved questions answers in this Test: Power Systems - 2 quiz give you a good mix of easy questions and tough questions. Electrical Engineering (EE) students definitely take this Test: Power Systems - 2 exercise for a better result in the exam. You can find other Test: Power Systems - 2 extra questions, long questions & short questions for Electrical Engineering (EE) on EduRev as well by searching above.
QUESTION: 1

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QUESTION: 2

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QUESTION: 3

### As per BIS rule the resistance of earth electrode should be measured in ............... weather.

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QUESTION: 4

A choke is generally used in series with the tube in a fluorescent lamp circuit to

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QUESTION: 5

In a power house, illumination should be approximately ............

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QUESTION: 6

Power factor of an alternator driven by constant prime mover input can be changed by changing its

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QUESTION: 7

The restraining voltage is measured in

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QUESTION: 8

Where is the draft tube of a hydropower station that is an airtight pipe located ?

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QUESTION: 9

What is the nominal pH value of water that is to be maintained in a steam raising thermal power station ?

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QUESTION: 10

The maximum demand of a consumer is 2 kW and the corresponding daily energy consumption is 30 unit. What is the corresponding load factor ?

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QUESTION: 11

Buses for load flow studies are classified as (i)the load bus, (ii) the generator bus and (iii) the
slack bus The correct combination of the pair of quantities specified having their usual meaning for different buses is

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QUESTION: 12

The impedance value of generator is 0.2 pu on a base value of 11 kV, 50 MVA. The impedance value for a base value of 22 KV, 150 MVA is

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QUESTION: 13

If the fault current is 2 kA, the relay setting is 50% and the C.T. ratio is 400/5, then the plug setting multiplier of a relay will be

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QUESTION: 14

A power plant has a maximum demand of 15 MW. The load factor is 50% and the plant factor is 40%. The operating reserve is

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QUESTION: 15

The load curve of system is shown in the figure.

The load factor of the system is

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QUESTION: 16

Galloping in transmission line conductors arises generally due to

Solution:

Galloping is a low frequency, large amplitude, wind-induced vibration of both single and bundle overhead conductors, with a single or a few loops of standing waves per span. It is caused by moderately strong, steady crosswind acting upon an asymmetrically- iced conductor surface.

QUESTION: 17

A thermal generating station has an installed capacity of 15 MW and supplies a daily load of 10 MW for 12 hours and 5 MW of remaining 12 hours. The plant capacity factor for this station is

Solution:

Plant capacity factor =

average energy produced/maximum possible energy based on installed capacity

= 10 x12 + 5 x 12 / 24 x 15 = 0.5

QUESTION: 18

Compared to Gauss-seidel method, Newton- Raphson method takes

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QUESTION: 19

The operation of a nuclear reactor is controlled by controlling multipliction factor (K) defined as

The power -level of the reactor can be increased by

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QUESTION: 20

Non-metallic conduits used in internal wiring are generally made of

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QUESTION: 21

PVC cables are usually used for

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QUESTION: 22

The rating of fuse wire is always expressed in

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QUESTION: 23

Protection by fuses is generally not used beyond

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QUESTION: 24

Energy meter, for connecting, has ––––––– terminals.

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Explanation : An energy meter usually has four terminals. A pair of terminals for the current coil and another pair for the Voltage coil (a.k.a pressure coil). As their name suggests, current coil is in series with the line and or produces magnetic field according to the current flow.

Whereas Voltage coil is in parallel with the Load and it produces magnetic field according to the voltage drop across the Load.

These two fields combine to produce a torque which rotates the aluminum disc on a conventional Energy meter.

QUESTION: 25

The positive sequence current for a L-L fault of a 2 kV system is 1400 A, and corresponding current for a L-L-G fault is 2220 A. The zero sequence impedance of the system is

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