Electrical Machines A synchronous machine has P number of poles, find the relation between electrical angular momentum (ωe) and mechanical angular momentum (ωm)? ωe = P*ωm ωe = P/2*ωm ωe = ωm ωe = 2/P*ωm ωe = P*ωm ωe = P/2*ωm ωe = ωm ωe = 2/P*ωm ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Slip test is performed to determine positive sequence reactance and negative sequence reactance All of these direct axis reactance and quadrature axis reactance slip positive sequence reactance and negative sequence reactance All of these direct axis reactance and quadrature axis reactance slip ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Dummy coils are used for reducing armature reaction. mechanical balancing. increasing efficiency. All of these reducing armature reaction. mechanical balancing. increasing efficiency. All of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following statements are correct ? None of these The leakage reactance of the induction motor should be small. Both 1 and 2. A small value of leakage reactance will increase the maximum power output of motor. None of these The leakage reactance of the induction motor should be small. Both 1 and 2. A small value of leakage reactance will increase the maximum power output of motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following is/are not a self starting motor? 1-phase induction motor 3-phase induction motor both 1 and 2 None of these 1-phase induction motor 3-phase induction motor both 1 and 2 None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Induction motors normally use cast aluminium rotor because aluminium is cheaper in cost. easy to cast owing to its low melting point and is easily available. lighter in weight. of low resistivity. cheaper in cost. easy to cast owing to its low melting point and is easily available. lighter in weight. of low resistivity. ANSWER DOWNLOAD EXAMIANS APP
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