41. Which of the following motors has series characteristics? A. Shaded pole motor B. Repulsion motor C. Capacitor start motor D. None of the above Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option B No explanation is given for this question Let's Discuss on Board
42. Which part of a motor needs maximum attention for maintenance? A. Frame B. Rearing C. Stator winding D. Rotor winding Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option B No explanation is given for this question Let's Discuss on Board
43. A wound rotor induction motor is preferred, as compared to squirrel cage induction motor, when major consideration is A. Slop speed operation B. High starting torque C. Low windage losses D. All of the above Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option B No explanation is given for this question Let's Discuss on Board
44. ________ has the least value of starting torque to full load torque ratio. A. D.C. shunt motor B. D.C. series motor C. Squirrel cage induction motor D. Slip ring induction motor Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C No explanation is given for this question Let's Discuss on Board
45. The starting torque in case of centrifugal pumps is generally A. Less than running torque B. Same as running torque C. Slightly more than running torque D. Double the running torque Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option A No explanation is given for this question Let's Discuss on Board
46. For a D.C. shunt motor which of the following is incorrect? A. Unsuitable for heavy duty starting B. Torque varies as armature current C. Torque armature current is a straight line D. Torque is zero for zero armature current Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option A No explanation is given for this question Let's Discuss on Board
47. Which of the following happens when star-delta starter is used? A. Starting voltage is reduced B. Starting current is reduced C. Both (A) and (B) D. None of the above Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C No explanation is given for this question Let's Discuss on Board
48. __________ method of starting a three phase induction motor needs six terminals. A. Star-delta B. Resistance starting C. Autotransformer D. None of the above Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option A No explanation is given for this question Let's Discuss on Board
49. In a paper mill where constant speed is required A. Synchronous motors are preferred B. A.C. motors are preferred C. Individual drive is preferred D. Group drive is preferred Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C No explanation is given for this question Let's Discuss on Board
50. Is preferred for synthetic fibre mills. A. Synchronous motor B. Reluctance motor C. Series motor D. Shunt motor Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option B No explanation is given for this question Let's Discuss on Board
