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SSC JE Electrical 2019 with solution SET-2

SSC JE Electrical 2019 with solution SET-2
Under no-load conditions in transmission lines, the receiving end voltage is greater than the sending end voltage. This effect is called

Skin effect
Proximity effect
Corona effect
Ferranti effect

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SSC JE Electrical 2019 with solution SET-2
In an alternator, if α = 60°, then find the pitch factor?

1/2
1
0
√3/2

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

The factor by which, the induced E.M.F gets reduced due to short pitching is called pitch factor or coil span factor denoted by Kc. It is given as
Kc = cosα/2
given
α = 60°
Kc = cos60/2
Kc = cos30°
Kc = √3/2

SSC JE Electrical 2019 with solution SET-2
The force experienced by current-carrying conductor lying parallel to magnetic field is

BIL
Zero
BIL cosφ
BIL sinφ

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SSC JE Electrical 2019 with solution SET-2
In a suspension type insulator the voltage…..?

Across the top disc is minimum
Across the center disc is minimum
Across the center disc is maximum
Across the top disc is maximum

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SSC JE Electrical 2019 with solution SET-2
In Boolean algebra (A. Ā) + A

Ā
0
1
A

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

According to Boolean algebra law
A. Ā = A
A + A = A
Therefore in the given question
(A. Ā) + A = A + A = A
 

SSC JE Electrical 2019 with solution SET-2
Which of the following is NOT an expression to find self-inductance?

Nφ/I
Nφ
N2μoμrA/I
N2/S

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