SSC JE Electrical 2019 with solution SET-1 A coil is wound with 50 turns and a current 8A produces a flux of 200μWb. Calculate the inductance of the coil 0.125 mH 0.25 mH 1.25 mH 2.5 mH 0.125 mH 0.25 mH 1.25 mH 2.5 mH ANSWER EXPLANATION DOWNLOAD EXAMIANS APP The inductance of the coil is given by the relationL = Nφ/IWhereN = number of turns = 50φ = flux = 200μWbI = current = 8 AL = 50 × 200 × 10−6 ⁄ 8L = 1.25 mH
SSC JE Electrical 2019 with solution SET-1 Which of the following losses is together called iron losses? Hysteresis loss and frictional loss Eddy current loss and hysteresis loss Hysteresis loss and copper loss Eddy current loss and frictional loss Hysteresis loss and frictional loss Eddy current loss and hysteresis loss Hysteresis loss and copper loss Eddy current loss and frictional loss ANSWER DOWNLOAD EXAMIANS APP
SSC JE Electrical 2019 with solution SET-1 The Thevenin’s resistance as seen through the terminals A and B is: 4 Ω 5 Ω 6 Ω 8 Ω 4 Ω 5 Ω 6 Ω 8 Ω ANSWER DOWNLOAD EXAMIANS APP
SSC JE Electrical 2019 with solution SET-1 The cheap and temporary system of the internal wiring is? Conduit wiring CTS or TRS wiring Casing-capping Cleat wiring Conduit wiring CTS or TRS wiring Casing-capping Cleat wiring ANSWER DOWNLOAD EXAMIANS APP
SSC JE Electrical 2019 with solution SET-1 If N = linkage flux, then the linkage flux per unit current is defined as: Inductive reactance Leakage coefficient Magnetomotive force Inductance Inductive reactance Leakage coefficient Magnetomotive force Inductance 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 Identify the important feature of a DC series motor High starting torque Low starting torque Zero starting torque Medium starting torque High starting torque Low starting torque Zero starting torque Medium starting torque ANSWER EXPLANATION DOWNLOAD EXAMIANS APP In DC series motor Torque (Ta) increase as the Square of armature current (Ia) Ta ∝ Ia2. So DC motor provides high starting torque.
EXAMIANS