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SSC JE Electrical 2019 with solution SET-2
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Observe the figure and find the correct relation from the four given options?

According to Kirchhoff’s law states that the current entering a node is always equal to the current leaving a node.

From the above Diagram

Current Flowing towards the Point: I1, I2, I6

Current Flowing Away from the Point: I3, I4, I5

Hence I1 + I2 + I6 = I3 + I4+ I5

SSC JE Electrical 2019 with solution SET-2
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The maximum number of socket outlets allowed per power sub-circuit = ?

Indian Electricity Rules specify that the maximum load on a power sub-circuit should not exceed 3000 watts and the number of outlets should be limited to two.

SSC JE Electrical 2019 with solution SET-2
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The wattage rating of a single-phase induction motor used as a ceiling fan will be in the range of

The wattage rating for a ceiling fan motor is in the range of 50 to 150 W. if the ceiling Fans size ranges from 36 inches to 56 inches then the total wattage use is 55 to 100 watts.. A 48-inch ceiling fan will use 75 watts.

SSC JE Electrical 2019 with solution SET-2
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_____type of single phase induction motor operates at better power factor at full load?

This type of motor is designed to operate with the start winding and it’s series capacitor permanently connected to the supply. lt has two capacitors connected in parallel in the start winding circuit for starting purposes. The running capacitor is employed to correct the power factor. As a result, this motor has a higher starting torque as well as a higher efficiency. These motors are employed in sizes ranging from 375 W to 7.5 kW. The power factor of these motor is upto 80% to 100%.

SSC JE Electrical 2019 with solution SET-2
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The impedance at resonance offered by a parallel resonant circuit is

A practical parallel resonance circuit is represented by an inductance and a resistance id one branch and a capacitance in other branches.

At resonance in a practical parallel resonance circuit, the impedance is maximum. Hence, it is called a rejector circuit, and it exhibits the property of voltage magnification.

Z = L/CR