Electrical Machines Which motors are preferred for refrigeration and air conditioning in smaller units? Induction motors. Reluctance motors. Universal motors. Stepper motors. Induction motors. Reluctance motors. Universal motors. Stepper motors. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The output power of a dc motor is given by EbIa2. EbIa. EIa. none of these. EbIa2. EbIa. EIa. none of these. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which type of motors are preferred in lifts? None of these DC compound motors. DC shunt motors. DC series motors. None of these DC compound motors. DC shunt motors. DC series motors. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The demagnetising component of armature reaction in a DC generator increases armature speed. results in sparking trouble. reduces inter poles flux density. reduces generator emf. increases armature speed. results in sparking trouble. reduces inter poles flux density. reduces generator emf. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC generators, the cause of rapid brush wear may be severe sparking. imperfect contact. any of above. rough commutator surface. severe sparking. imperfect contact. any of above. rough commutator surface. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC generator, the armature reaction results in magnetization of inter poles. demagnetization of leading & magnetization of trailing pole tip. demagnetization of centers of poles. magnetization of leading and demagnetization of trailing pole tip. magnetization of inter poles. demagnetization of leading & magnetization of trailing pole tip. demagnetization of centers of poles. magnetization of leading and demagnetization of trailing pole tip. ANSWER DOWNLOAD EXAMIANS APP
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