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SSC JE Electrical 2019 with solution SET-2

SSC JE Electrical 2019 with solution SET-2
The torque angle of a 3-phase synchronous motor depends on its _____

Excitation
Speed
Supply voltage
Load

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SSC JE Electrical 2019 with solution SET-2
The residential distribution system employs_____

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

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

Air preheater
Economizer
Super heater
Turbine

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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
Which of the following heating element has the lowest operating temperature?

Eureka
Kanthal
Graphite
Nichrome

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The melting point of Eureka is 1221 to 1300 °C
The melting point of Kanthal is 1,425 °C
The melting point of Nichrome is 1400 °C
The melting point of Graphite is 3,600°C
Hence Eureka has the least range of temperature.
 

SSC JE Electrical 2019 with solution SET-2
While estimating the overhead lines, if the number of poles required is 14, then what is the estimated number of earth sets required?

5
4
3
2

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

While estimating the overhead lines, the first and last pole is always earth connected and after every 3rd electrical pole, the fourth pole is earthed. Therefore, the approximate number of required ground set = 4
 

SSC JE Electrical 2019 with solution SET-2
A diode appears as in forward region of its characteristics?

A high resistor
A capacitor
An ON switch
An OFF switch

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A P-N junction acts as a voltage-controlled switch. During forward biasied the p-n junction diode acts like an ON switch. When reverse biased, it acts like an OFF switch.
 


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