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SSC JE Electrical 2019 with solution SET-2

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

5∠30°
100∠30°
100∠120°
4∠30°

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please check below image for solution.


SSC JE Electrical 2019 with solution SET-2
The input for a condenser in a steam power plant comes from a/an

Economizer
Air preheater
Super heater
Turbine

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Condenser – Condenser is a heat exchanger in which cooling water is circulated through the tubes. The exhaust steam from the turbine enters the condenser where it is cooled and converted to condensate (water).
 


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

Supply voltage
Load angle
Speed of the motor
Power factor

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SSC JE Electrical 2019 with solution SET-2
A choke can be represented by a

RC series circuit
RL series circuit
RLC series circuit
R circuit

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A choke coil is simply a coil having a large inductance, but a small resistance.  A device that can regulate the current in an A.C. circuit without much loss of energy is called as ‘choke coil’.


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
Observe the given table. The truth table represents gate?

NAND
XOR
OR
AND

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.

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