SSC JE Electrical 2019 with solution SET-1 ______starting method CANNOT be used for starting a 3-phase squirrel cage induction motor Direct-on-line Rotor-resistance Star-delta Auto-transformer Direct-on-line Rotor-resistance Star-delta Auto-transformer ANSWER DOWNLOAD EXAMIANS APP
SSC JE Electrical 2019 with solution SET-1 Identify the important feature of a DC series motor High starting torque Medium starting torque Low starting torque Zero starting torque High starting torque Medium starting torque Low starting torque Zero 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.
SSC JE Electrical 2019 with solution SET-1 Two inductors of 4H and 6H are connected in series. The equivalent inductance of this combination is 10 H 6 H 2.4 H 4 H 10 H 6 H 2.4 H 4 H ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Total inductance when inductor are connected in seriesL = L1 + L2L = 4 + 6 =10H
SSC JE Electrical 2019 with solution SET-1 Which of the following lamps employs a bimetallic strip? Fluorescent lamp Sodium vapor lamp Mercury vapor lamp Incandescent lamp Fluorescent lamp Sodium vapor lamp Mercury vapor lamp Incandescent lamp ANSWER DOWNLOAD EXAMIANS APP
SSC JE Electrical 2019 with solution SET-1 With the current direction marked in the circuit shown, the net voltage applied is V2 V1 −(V2 − V1) (V2 − V1) V2 V1 −(V2 − V1) (V2 − V1) ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Net voltage = −V2 + V1Net voltage = −(V2 − V1)
SSC JE Electrical 2019 with solution SET-1 A single-phase circuit’s power factor can be measured with a/an Combination of a voltmeter, ammeter, and wattmeter Wattmeter alone Combination of a voltmeter and ammeter Energy meter alone Combination of a voltmeter, ammeter, and wattmeter Wattmeter alone Combination of a voltmeter and ammeter Energy meter alone ANSWER DOWNLOAD EXAMIANS APP
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