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SSC JE Electrical 2019 with solution SET-2

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

Supply voltage
Speed of the motor
Load angle
Power factor

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

1110
0010
0001
0011

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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
A coil of 360 turns is linked by a flux of 200 μWb. If the flux is reversed in 0.01 second, then find the EMF induced in the coil?

144 V
7.2 V
14.4 V
0.72 V

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Given


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

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

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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 residential distribution system employs_____

Two-phase, four-wire
Three-phase, four-wire
Three-phase, three-wire
Single-phase, two-wire

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SSC JE Electrical 2019 with solution SET-2
Observe the given figure. If the diode is an ideal diode, then what are the values of Io and Vo respectively?

0.2 A, 0V
10A, 2 V
2 A, 10 V
0 A, 0.2 V

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Io = V/R = 20/100
Io = 0.2 A
Since the given diode is an ideal diode therefore there is no voltage drop across it.
Vo = Io × RD
Vo = 0.2 × 0
Vo = 0
Hence Io = 0.2 A & Vo = 0
 

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