SSC JE Electrical 2019 with solution SET-1 An electric motor in which both the rotor and stator fields rotate with the same speed is called Induction motor Synchronous motor DC motor Universal motor Induction motor Synchronous motor DC motor Universal motor ANSWER EXPLANATION DOWNLOAD EXAMIANS APP In the synchronous motor, the stator and rotor rotate at the same speed.
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 synchronous motor runs at 600rpm, which of the following case is true? P = 10, f = 60 Hz P= 12, f = 50 Hz P = 8, f = 50 Hz P = 12, f = 60 Hz P = 10, f = 60 Hz P= 12, f = 50 Hz P = 8, f = 50 Hz P = 12, f = 60 Hz ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Synchronous speed NS = 120f/PWhenP = 12 & F = 60 then Ns = ?NS = 120f/P = (120 × 60)/12 = 600 RPM
SSC JE Electrical 2019 with solution SET-1 The below symbol which is used in single line diagrams represents Potential transformer Current transformer Circuit breaker Power transformer Potential transformer Current transformer Circuit breaker Power transformer ANSWER DOWNLOAD EXAMIANS APP
SSC JE Electrical 2019 with solution SET-1 The cheap and temporary system of the internal wiring is? Cleat wiring CTS or TRS wiring Casing-capping Conduit wiring Cleat wiring CTS or TRS wiring Casing-capping Conduit wiring ANSWER DOWNLOAD EXAMIANS APP
SSC JE Electrical 2019 with solution SET-1 An electric heater is connected across 230V and it draws a current of 2A. Then the resistance offered by the heater is? 115 ohm 29 ohm 290 ohm 11.5 ohm 115 ohm 29 ohm 290 ohm 11.5 ohm ANSWER EXPLANATION DOWNLOAD EXAMIANS APP GivenVoltage V = 230 VCurrent I = 2 AResistance R = V/IR = 230/2 = 115 Ω
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