Electrical Machines In DC generators, the cause of rapid brush wear may be rough commutator surface. imperfect contact. any of above. severe sparking. rough commutator surface. imperfect contact. any of above. severe sparking. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In auto transformer if the turn ratio is K, what is the power transferred inductively? both A and B K × input power (1-K) × input power None of these both A and B K × input power (1-K) × input power None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines which of the following type of brush and their application is/are correct carbon brush → normal ratings copper graphite → low voltage high current density electro graphite → large ratings All of these carbon brush → normal ratings copper graphite → low voltage high current density electro graphite → large ratings All of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following machine will have maximum efficiency? Electrical power generator. Electrical power transformer. Induction motor. DC motor. Electrical power generator. Electrical power transformer. Induction motor. DC motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which type of motors are preferred in lifts? DC shunt motors. None of these DC series motors. DC compound motors. DC shunt motors. None of these DC series motors. DC compound motors. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Two generators operating in parallel with rating 50MW and 100MW respectively. Both their respective governor settings are identical as 4%, consider same no load frequency. How will the machine share a common load of 100 MW 66.67 MW and 33.33 MW respectively 33.33 MW and 66.67 MW respectively any of the above 50 MW and 50 MW respectively 66.67 MW and 33.33 MW respectively 33.33 MW and 66.67 MW respectively any of the above 50 MW and 50 MW respectively ANSWER DOWNLOAD EXAMIANS APP
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