A) Lagging power factor only B) Leading power factor only C) Unity power factor only D) Lagging, leading and unity power factor only. Ans : (A)
A) Repulsion motor B) Reluctance motor C) Universal motor D) ac series motor. Ans : (B)
A) depends on the nature of load B) unity power factor C) leading power factor D) lagging power factor. Ans : (C)
A) repulsion motor B) reluctance motor C) universal motor D) ac series motor. Ans : (B)
A) rotor excitation only B) maximum value of coupling angle C) supply voltage only D) rotor excitation supply voltage and maximum value of coupling angle. Ans : (D)
A) decrease B) remain constant C) improve D) depend on other factors. Ans : (C)
A) low excitation only B) high excitation only C) both low and high excitation D) depends on other factors. Ans : (C)
A) lagging B) leading C) zero D) unity. Ans : (A)
A) not start B) start and continue to run as an induction motor C) start as an induction motor and then run as synchronous motor D) burn immediately. Ans : (C)
A) Cage rotor B) Either salient pole or smooth cylindrical rotor C) Smooth cylindrical rotor D) Salient pole rotor. Ans : (D)