Electrical Machines The principle of dynamically induced emf is utilized in choke. generator. transformer. thermocouple. choke. generator. transformer. thermocouple. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Rotor resistance speed control is used in slip ring induction motor. squirrel cage induction motor. synchronous motor. dc shunt motor. slip ring induction motor. squirrel cage induction motor. synchronous motor. dc shunt motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines To control the speed of an induction motor, the supply frequency is reduced by 10%. For the same magnetizing current to remain constant, the supply voltage must be increased by 10% increased by 20% reduced by 20% reduced by 10% increased by 10% increased by 20% reduced by 20% reduced by 10% ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A dc motor with armature resistance of 0.5 ohms connected directly to a 230 Volt supply. If the armature is stationary then the current flowing through armature is 250 A. 340 A. 460 A. 570 A. 250 A. 340 A. 460 A. 570 A. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When an electric train is moving down a hill, the DC motor will operate as DC shunt generator. DC shunt motor. DC series motor. DC series generator. DC shunt generator. DC shunt motor. DC series motor. DC series generator. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The armature reaction mmf in a DC machines has a form of rectangular. trapezoidal. sinusoidal. triangular. rectangular. trapezoidal. sinusoidal. triangular. ANSWER DOWNLOAD EXAMIANS APP
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