A) nearly coincide with stator pole B) are far ahead that of stator pole C) are far behind that of stator pole D) none of the above. Ans : (A)
A) its speed will first decrease and then become synchronous B) its speed will first increase and then become synchronous C) its speed will fluctuate around synchronous speed and then become synchronous D) its speed will remain unchanged. Ans : (D)
A) 10o electrical B) 20o electrical C) 40o electrical D) none of the above. Ans : (B)
A) 0.8 lagging power factor B) 0.8 loading power factor C) unity power factor D) none of the above. Ans : (A)
A) reduction in speed B) increase in speed C) decrease in speed D) relative shift between stator and rotor poles. Ans : (D)
A) pony motor B) variable frequency source C) damper winding D) none of the above. Ans : (C)
A) 0o B) 30o C) 45o D) 75o. Ans : (D)
A) mid way between N and S poles of stator B) Coincident with stator poles C) 45 (electrical) behind stator poles D) none of the above. Ans : (A)
A) 0.8 leading power factor B) 0.8 lagging power factor C) unity power factor D) none of the above. Ans : (C)
A) remain unchanged B) is increased C) is decreased D) none of the above. Ans : (B)