A) Field’s test B) Brake test C) Running down test D) Swinburne’s test. Ans : (B)
A) more than 480 rpm B) 480 rpm C) less than 480 rpm D) zero. Ans : (A)
A) 1.5 pu B) 2.0 pu C) 1.0 pu D) 0.5 pu. Ans : (D)
A) Starting torque B) Full load speed C) Full load current D) None of the above. Ans : (C)
A) Flame-proof type B) Protected type C) Splash proof type D) Totally enclosed fan cooled type. Ans : (C)
A) due to short circuits in the equipment B) from long-term over loads C) from excessive starting currents D) all of the above. Ans : (D)
A) Ripple torque B) Dynamic torque C) Holding torque D) Detent torque. Ans : (C)
A) four times the torque in parallel arrangement B) one fourth of torque in parallel arrangement C) half of torque in parallel arrangement D) same as torque in parallel arrangement. Ans : (A)
A) a series motor B) a shunt motor C) a cumulatively compounded generator D) a differentially compounded generator. Ans : (C)
A) changing the field resistance B) changing the terminal voltage applied to the armature C) inserting a resistor in series with the armature circuit D) any of the above. Ans : (D)