SSC JE Electrical 2019 with solution SET-1 If N = linkage flux, then the linkage flux per unit current is defined as: Magnetomotive force Leakage coefficient Inductance Inductive reactance Magnetomotive force Leakage coefficient Inductance Inductive reactance ANSWER EXPLANATION DOWNLOAD EXAMIANS APP The inductance L of this coil is defined as the flux linkage per unit current and its unit is Henry.L =Λ/IWhereΛ = Flux linkageI = current
SSC JE Electrical 2019 with solution SET-1 Find the mutual inductance between two ideally coupled coils of 2H and 8H 16 H 4 H 8 H 2 H 16 H 4 H 8 H 2 H ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Mutual inductance between the two coils is K = √L1.L2K = √2 × 8k = √16k = 4 H
SSC JE Electrical 2019 with solution SET-1 When the only current source is active in the circuit, find the current through the 10Ω resistor 1.66 A 1.33 A 0.66 A 0 A 1.66 A 1.33 A 0.66 A 0 A ANSWER DOWNLOAD EXAMIANS APP
SSC JE Electrical 2019 with solution SET-1 What is the reason behind using a centrifugal switch in a single-phase induction motor? To out in the capacitor during running conditions To cut-off the starting winding at an appropriate instant To protect the motor from overloading To improve the starting performance of the motor To out in the capacitor during running conditions To cut-off the starting winding at an appropriate instant To protect the motor from overloading To improve the starting performance of the motor ANSWER EXPLANATION DOWNLOAD EXAMIANS APP The centrifugal switch is used to disconnect the starting winding of the motor once the motor approaches its normal operating speed i.e 50% – 70% speed.
SSC JE Electrical 2019 with solution SET-1 ______starting method CANNOT be used for starting a 3-phase squirrel cage induction motor Rotor-resistance Direct-on-line Auto-transformer Star-delta Rotor-resistance Direct-on-line Auto-transformer Star-delta ANSWER DOWNLOAD EXAMIANS APP
SSC JE Electrical 2019 with solution SET-1 _____ power plant is the plant which uses a non-conventional source of energy Hydroelectric Wind Nuclear Thermal Hydroelectric Wind Nuclear Thermal ANSWER DOWNLOAD EXAMIANS APP
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