Electrical Machines The working principle of transformer depends on Amperes law. Coulombs law. Newtons law. Faradays law of electromagnetic induction. Amperes law. Coulombs law. Newtons law. Faradays law of electromagnetic induction. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The speed regulation of a DC motor is given as NnL/NfL. (NfL − NnL)/NnL. (NnL − NfL)/NfL. NnL − NfL. NnL/NfL. (NfL − NnL)/NnL. (NnL − NfL)/NfL. NnL − NfL. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the field circuit of a DC shunt motor is opened DC Shunt Motor The speed of motor will be reduced. The armature current will reduce. The motor will attain dangerously high speed. DC Shunt Motor The speed of motor will be reduced. The armature current will reduce. The motor will attain dangerously high speed. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Silicon content in steel lamination is kept within 5% as it increases hysteresis loss. Increases cost. All of these makes the material brittle. increases hysteresis loss. Increases cost. All of these makes the material brittle. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC machine shape of main field flux distribution is? peaky in nature saddle shape flat tapped or trapezoidal triangular peaky in nature saddle shape flat tapped or trapezoidal triangular 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
EXAMIANS