Cylindrical pole type rotors are generally used with prime movers of
High speed
Why Cylindrical Pole Rotors are Used with High Speed Prime Movers High-speed prime movers, such as steam turbines used in thermal and nuclear power plants, operate at speeds typically around 3000 or 3600 RPM (for 50 Hz or 60 Hz systems, respectively, with 2-pole generators).
Important Questions from Alternator and Synchronous Motors
Consider the table given:
Constructional feature
Machine type
Mitigation
(P) Damper bars
(S) Induction motor
(X) Hunting
(Q) Skewed rotor slots
(T) Transformer
(Y) Magnetic locking
(R) Compensation winding
(U)Synchronous machine
(Z) Armature reaction
(V) DC machine
The correct combination that relates the constructional feature, machine type and mitigation isTorques are associated with synchronous motor; which of the following torques is also known as breakaway torque?
In a synchronous motor hunting takes place
Which of the following statements about the armature reaction of an alternator with unity power factor is NOT true?
At unity power factor, armature reaction of an alternator is:
