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SSC JE Electrical 2019 with solution SET-2

SSC JE Electrical 2019 with solution SET-2
The maximum number of socket outlets allowed per power sub-circuit = ?

1
3
2
4

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Indian Electricity Rules specify that the maximum load on a power sub-circuit should not exceed 3000 watts and the number of outlets should be limited to two.
 

SSC JE Electrical 2019 with solution SET-2
Observe the given figure. Find Thevenin’s resistance as seen from open-circuited terminals?

16 Ω
8 Ω
4 Ω
32 Ω

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

To find the Thevenin’s resistance the current source is open-circuited and the voltage source is short-circuited.


SSC JE Electrical 2019 with solution SET-2
Two coils are said to be ‘magnetically isolated’ provided the coefficient of coupling K

Is equal to zero
Is equal to one
Is less than or equal to one
Is less than one

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

When there is no mutual flux between two coils, they are said to be magnetically isolated. In this case. k = 0 and M = 0.

SSC JE Electrical 2019 with solution SET-2
The torque angle of a 3-phase synchronous motor depends on its _____

Excitation
Load
Supply voltage
Speed

ANSWER DOWNLOAD EXAMIANS APP

SSC JE Electrical 2019 with solution SET-2
The change in DC excitation of a synchronous motor will also change the

Power factor
Supply voltage
Load angle
Speed of the motor

ANSWER DOWNLOAD EXAMIANS APP

SSC JE Electrical 2019 with solution SET-2
If the number of poles in an 11 KV transmission line is 80, then how many disc insulators are required?

80
160
240
6

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

No of disc required for 11 kV transmission line = 1 disc
Since the transmission line is 3-phase, therefore, the number of discs required for a single-pole will be 3.
Total no. of poles = 80
No of disc = 3 × 80 = 240
 

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