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SSC JE Electrical 2019 with solution SET-2

SSC JE Electrical 2019 with solution SET-2
Observe the given table. The truth table represents gate?

OR
AND
XOR
NAND

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

In the exclusive OR gate (XOR gate) has two inputs
The ouput will be 1 when either input is 1 i.e X = 1 and Y = 1, but not when both the inputs are 1.
If both the input is zero i.e X = 0 and Y = 0, then the output is 0.

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
In Boolean algebra (A. Ā) + A

1
0
A
Ā

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
The function of compensation winding in AC series motor is to

Reduced the armature resistance
Increase field flux
Reduce the effects of armature reaction
Improve commutation

ANSWER DOWNLOAD EXAMIANS APP

SSC JE Electrical 2019 with solution SET-2
An ideal transformer will not transform?,
I. Power
II. Current
III. Frequency
IV. Voltage

I and III
I and II
Ill and IV
II and III

ANSWER DOWNLOAD EXAMIANS APP

SSC JE Electrical 2019 with solution SET-2
The total number of possible phase sequences for a three-phase AC system is ____

2
3
1
0

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

A phase sequence is an order or sequence in which the currents or voltages of different phases attain their maximum values. In a three-phase system, there are only two possible phase sequences: R-Y-B (positive Phase Sequence) and R-B-Y (Negative Phase Sequence).

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