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SSC JE Electrical 2019 with solution SET-2

SSC JE Electrical 2019 with solution SET-2
If a zero-centered voltmeter has a scale from  5V to − 5V, then the span of it is

−5 V
0 V
10V
5 V

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Voltage Scale Span of  instrument = Vmax − Vmin
Given
Vmax = 5 V
Vmin = −5V
Span = 5 −(−5) = 10 V
 

SSC JE Electrical 2019 with solution SET-2
  If two impedances are given as Z1 = 20∠60° and Z2 = 5∠30°, then Z1/Z2 = ?

100∠120°
5∠30°
100∠30°
4∠30°

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

please check below image for solution.


SSC JE Electrical 2019 with solution SET-2
A _____ transformer is usually mounted on a pole of plinth?

Power
Distribution
Current
Potential

ANSWER DOWNLOAD EXAMIANS APP

SSC JE Electrical 2019 with solution SET-2
In excess-three code the 4-bit group that is used is

1110
0001
0011
0010

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

The excess-3 code for a given decimal number is determined by adding ‘3’ or “0011” to each decimal digit in the given number.

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
32 Ω
4 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
In an alternator, if α = 60°, then find the pitch factor?

√3/2
1
0
1/2

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

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