SSC JE Electrical 2019 with solution SET-1 The ratio of average energy demand to maximum demand during a specific period in Load factor Utilization factor Form factor Power factor Load factor Utilization factor Form factor Power factor ANSWER EXPLANATION DOWNLOAD EXAMIANS APP The ratio of average energy demand to maximum demand during a specific period is called the load factor.Load Factor = Average Load/Maximum Demand
SSC JE Electrical 2019 with solution SET-1 ________ is used to manufacture stay wire, earth wire, and structural components Cadmium copper Hard drawn copper Nichrome Galvanized steel Cadmium copper Hard drawn copper Nichrome Galvanized steel ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Galvanized steel conductors do not corrode, and possess high resistance. Hence such Wires are used in telecommunications circuits, earth wires, guard wire, stray wire, etc.
SSC JE Electrical 2019 with solution SET-1 Identify the INCORRECT statement with regards to synchronous motors It is a constant speed motor It is a self-starting machine The field winding is placed on the rotor The armature winding is placed on the stator It is a constant speed motor It is a self-starting machine The field winding is placed on the rotor The armature winding is placed on the stator ANSWER EXPLANATION DOWNLOAD EXAMIANS APP A synchronous motor is not a self-starting motor. You can check out this article why synchronous motor is not self starting
SSC JE Electrical 2019 with solution SET-1 In the circuit shown, if R = 0, then the phase angle between v(t) and i(t) is 90° 60° 0° 30° 90° 60° 0° 30° ANSWER EXPLANATION DOWNLOAD EXAMIANS APP In the given circuit if R = 0 then the circuit becomes purely inductive. So the phase angle between v(t) and i(t) is 90°.
SSC JE Electrical 2019 with solution SET-1 A synchronous motor runs at 600rpm, which of the following case is true? P = 8, f = 50 Hz P = 12, f = 60 Hz P= 12, f = 50 Hz P = 10, f = 60 Hz P = 8, f = 50 Hz P = 12, f = 60 Hz P= 12, f = 50 Hz P = 10, 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 An electric motor in which both the rotor and stator fields rotate with the same speed is called Induction motor DC motor Synchronous motor Universal motor Induction motor DC motor Synchronous motor Universal motor ANSWER EXPLANATION DOWNLOAD EXAMIANS APP In the synchronous motor, the stator and rotor rotate at the same speed.
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