Electrical Machines DC generators are usually designed to develop armature voltages not exceeding 650 V because of the limitations imposed by commutator starters field winding armature winding commutator starters field winding armature winding ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The armature shaft must be able to with stand Twisting stains due to transmission of torque. All of these Any unbalanced magnetic pull on the armature core. Bending moment due to weight of the armature. Twisting stains due to transmission of torque. All of these Any unbalanced magnetic pull on the armature core. Bending moment due to weight of the armature. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The slight curvature at the lower end of the OCC of a self excited DC generator is due to magnetic inertia. residual flux. high field resistance. high speed. magnetic inertia. residual flux. high field resistance. high speed. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The shaft torque of a dc motor is less than the electromagnetic torque because of mechanical losses. hysteresis losses. eddy current losses. ohmic losses. mechanical losses. hysteresis losses. eddy current losses. ohmic losses. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Swinburne's test is applicable to DC Shunt motor. DC compound motor. DC series motor. DC shunt and level Compound motor. DC Shunt motor. DC compound motor. DC series motor. DC shunt and level Compound motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines An ideal synchronous motor has no starting torque because relative velocity between the stator and rotor mmf’s is zero. rotor winding is highly reactive. relative velocity between stator and rotor mmf’s is not zero. rotor is made up of salient poles. relative velocity between the stator and rotor mmf’s is zero. rotor winding is highly reactive. relative velocity between stator and rotor mmf’s is not zero. rotor is made up of salient poles. ANSWER DOWNLOAD EXAMIANS APP
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