1. In a split phase motor, the running winding should have
2. If the capacitor of a single-phase motor is short-circuited
3. In capacitor start single-phase motors
4. In a capacitor start and run motors the function of the running capacitor in series with the auxiliary winding is to
5. In a capacitor start motor, the phase displacement between starting and running winding can be nearly
6. In a split phase motor ________.
7. The rotor developed by a single-phase motor at starting is
8. Which of the following motor will give relatively high starting torque ?
9. Which of the following motor will have relatively higher power factor ?
10. In a shaded pole motor, the shading coil usually consist of _______.
11. In a shaded pole single-phase motor, the revolving field is produced by the use of
12. A centrifugal switch is used to dis- connect 'starting winding when motor has
13. If a particular application needs high speed and high starting torque, then which of the following motor will be preferred ?
14. The value of starting capacitor of a fractional horse power motor will be
15. In repulsion motor direction of rotation of motor _______.
16. In a single phase motor the centrifugal switch
17. The running winding of a single phase motor on testing with meggar is found to be ground. Most probable location of the ground will be
18. A capacitor-start single phase induction motor is switched on to supply with its capacitor replaced by an inductor of equivalent reactance value. It will
19. Which of the following motors is used in mixies ?
20. Which of the following motors is inherently self starting ?
21. The direction of rotation of an hysteresis motor is determined by
22. Burning out of windings is due to
23. Direction of rotation of a split phase motor can be reversed by reversing the connection of
24. Short-circuiter is used in
25. The range of efficiency for shaded pole motors is
26. In a capacitor start single-phase motor, when capacitor is replaced by a resistance
27. The power factor of a single-phase induction motor is usually
28. A shaded pole motor can be used for
29. A hysteresis motor works on the principle of
30. Which of the following motor will give the highest starting torque ?
31. For which of the applications a reluctance motor is preferred ?
32. The motor used on small lathes is usually
33. Which of the following motors is preferred for tape-recorders ?
34. A single-phase induction motor is
35. A schrage motor can run on
36. A universal motor can run on
37. Which of the following single-phase motors is suitable for timing and control purposes ?
38. Single phase induction motor usually operates on
39. In split-phase motor auxiliary winding is of ______.
40. Which of the following motors will operate at high power factor ?
41. In a two value capacitor motor, the capacitor used for running purposes is
42. Which of the following motors can be run on AC. as well as D.C. supply ?
43. In A.C. series motor compensating winding is employed to
44. Which of the following single-phase induction motors is generally used in time phonographs ?
45. Which of the following motors has highest starting torque ?
46. The repulsion-start induction-run motor is used because of
47. In case of a shaded pole motor the direction of rotation of the motor is
48. In case of high speed universal motor which of the following needs more attention ?
49. The wattage rating for a ceiling fan motor will be in the range
50. The wattage of motor for driving domestic sewing machine will be around
51. Which of the following single-phase motors has relatively poor starting torque ?
52. Which type of load is offered by cranes and hoists ?
53. The speed of a universal motor is generally reduced by using
54. Which of the following motors can be used for unity power factor ?
55. When a D.C. series motor is connected to A.C. supply, the power factor will be low because of
56. The direction of rotation of universal motor can be reversed the by reversing the flow of current through
57. In which single-phase motor, the rotor has no teeth or winding ?
58. Which motor is normally free from mechanical and magnetic vibrations ?
59. As hysteresis motors are free from mechanical and magnetic vibrations therefore these are considered as suitable for
60. A reluctance motor
61. In a hysteresis motor, the rotor must have
62. The rotor of a hysteresis motor is made of
63. The electric motor used in portable drills is
64. Which of the following applications always have some load whenever switched on ?
65. The speed control of universal motor used for sewing machines is by
66. Torque developed by a single phase induction motor at starting is
67. In split phase motor main winding is of
68. In repulsion motor, maximum torque is developed when
69. If the centrifugal switch does not open at 70 to 80 percent of synchronous speed of motor, it would result in
70. Speed torque characteristic of a repulsion induction motor is similar to that of a D.C.
71. In a ceiling fan employing capacitor run motor
72. The shaded pole motor is used for
73. The rotor slots, in an induction motor, are usually not quite parallel to the shaft because it
74. The speed/load characteristics of a universal motor is same as that of
75. The purpose of stator winding in the compensated repulsion motor is to
76. Which of the following motors is used for unity power factor ?
77. The motor used for the compressors is
78. Which of the following motors is used in a situation where load increases with speed ?
79. In repulsion motor, zero torque is developed when
80. Centrifugal switch disconnects the auxiliary winding of the motor at about ____ percent of synchronous speed
81. Starting winding of a single phase motor of a refrigerator is disconnected from the circuit by means of a
82. If a single phase induction motor runs slower than normal, the most likely defect is
83. Which of the following motors is used in tape-recorders ?
84. Which of the following statements regarding two value capacitor motor is incorrect ?
85. Two-value capacitor motor finds increased application as compressor motor in small home air-conditioners because
86. If the centrifugal switch of a two-value capacitor motor using two capacitors fails to open then
87. In a universal motor, the most common cause of brush sparking is
88. If starting winding of a single-phase induction motor is left in the circuit, it will
89. Most of the fractional horsepower motors have either
90. Which of the following statements regarding reluctance-start motor is incorrect ?
91. To reverse the direction of rotation of acapacitor start motor while it is running we should
92. In case of a reluctance motor, when the load is increased so that it cannot maintain synchronous speed the motor will
93. Which of the following motors has two separate windings on the motor ?
94. A shaded pole motor does not possess
95. In a A.C. series motor armature coils are usually connected to commutator
96. Locked rotor current of a shaded pole motor is ________.
97. A universal motor is one which.
98. A repulsion motor is equipped with
99. The capacitors used in single-phase capacitor motors have no
100. If a D.C. series motor is operated on A.C. supply, it will
2. If the capacitor of a single-phase motor is short-circuited
3. In capacitor start single-phase motors
4. In a capacitor start and run motors the function of the running capacitor in series with the auxiliary winding is to
5. In a capacitor start motor, the phase displacement between starting and running winding can be nearly
6. In a split phase motor ________.
7. The rotor developed by a single-phase motor at starting is
8. Which of the following motor will give relatively high starting torque ?
9. Which of the following motor will have relatively higher power factor ?
10. In a shaded pole motor, the shading coil usually consist of _______.
11. In a shaded pole single-phase motor, the revolving field is produced by the use of
12. A centrifugal switch is used to dis- connect 'starting winding when motor has
13. If a particular application needs high speed and high starting torque, then which of the following motor will be preferred ?
14. The value of starting capacitor of a fractional horse power motor will be
15. In repulsion motor direction of rotation of motor _______.
16. In a single phase motor the centrifugal switch
17. The running winding of a single phase motor on testing with meggar is found to be ground. Most probable location of the ground will be
18. A capacitor-start single phase induction motor is switched on to supply with its capacitor replaced by an inductor of equivalent reactance value. It will
19. Which of the following motors is used in mixies ?
20. Which of the following motors is inherently self starting ?
21. The direction of rotation of an hysteresis motor is determined by
22. Burning out of windings is due to
23. Direction of rotation of a split phase motor can be reversed by reversing the connection of
24. Short-circuiter is used in
25. The range of efficiency for shaded pole motors is
26. In a capacitor start single-phase motor, when capacitor is replaced by a resistance
27. The power factor of a single-phase induction motor is usually
28. A shaded pole motor can be used for
29. A hysteresis motor works on the principle of
30. Which of the following motor will give the highest starting torque ?
31. For which of the applications a reluctance motor is preferred ?
32. The motor used on small lathes is usually
33. Which of the following motors is preferred for tape-recorders ?
34. A single-phase induction motor is
35. A schrage motor can run on
36. A universal motor can run on
37. Which of the following single-phase motors is suitable for timing and control purposes ?
38. Single phase induction motor usually operates on
39. In split-phase motor auxiliary winding is of ______.
40. Which of the following motors will operate at high power factor ?
41. In a two value capacitor motor, the capacitor used for running purposes is
42. Which of the following motors can be run on AC. as well as D.C. supply ?
43. In A.C. series motor compensating winding is employed to
44. Which of the following single-phase induction motors is generally used in time phonographs ?
45. Which of the following motors has highest starting torque ?
46. The repulsion-start induction-run motor is used because of
47. In case of a shaded pole motor the direction of rotation of the motor is
48. In case of high speed universal motor which of the following needs more attention ?
49. The wattage rating for a ceiling fan motor will be in the range
50. The wattage of motor for driving domestic sewing machine will be around
51. Which of the following single-phase motors has relatively poor starting torque ?
52. Which type of load is offered by cranes and hoists ?
53. The speed of a universal motor is generally reduced by using
54. Which of the following motors can be used for unity power factor ?
55. When a D.C. series motor is connected to A.C. supply, the power factor will be low because of
56. The direction of rotation of universal motor can be reversed the by reversing the flow of current through
57. In which single-phase motor, the rotor has no teeth or winding ?
58. Which motor is normally free from mechanical and magnetic vibrations ?
59. As hysteresis motors are free from mechanical and magnetic vibrations therefore these are considered as suitable for
60. A reluctance motor
61. In a hysteresis motor, the rotor must have
62. The rotor of a hysteresis motor is made of
63. The electric motor used in portable drills is
64. Which of the following applications always have some load whenever switched on ?
65. The speed control of universal motor used for sewing machines is by
66. Torque developed by a single phase induction motor at starting is
67. In split phase motor main winding is of
68. In repulsion motor, maximum torque is developed when
69. If the centrifugal switch does not open at 70 to 80 percent of synchronous speed of motor, it would result in
70. Speed torque characteristic of a repulsion induction motor is similar to that of a D.C.
71. In a ceiling fan employing capacitor run motor
72. The shaded pole motor is used for
73. The rotor slots, in an induction motor, are usually not quite parallel to the shaft because it
74. The speed/load characteristics of a universal motor is same as that of
75. The purpose of stator winding in the compensated repulsion motor is to
76. Which of the following motors is used for unity power factor ?
77. The motor used for the compressors is
78. Which of the following motors is used in a situation where load increases with speed ?
79. In repulsion motor, zero torque is developed when
80. Centrifugal switch disconnects the auxiliary winding of the motor at about ____ percent of synchronous speed
81. Starting winding of a single phase motor of a refrigerator is disconnected from the circuit by means of a
82. If a single phase induction motor runs slower than normal, the most likely defect is
83. Which of the following motors is used in tape-recorders ?
84. Which of the following statements regarding two value capacitor motor is incorrect ?
85. Two-value capacitor motor finds increased application as compressor motor in small home air-conditioners because
86. If the centrifugal switch of a two-value capacitor motor using two capacitors fails to open then
87. In a universal motor, the most common cause of brush sparking is
88. If starting winding of a single-phase induction motor is left in the circuit, it will
89. Most of the fractional horsepower motors have either
90. Which of the following statements regarding reluctance-start motor is incorrect ?
91. To reverse the direction of rotation of acapacitor start motor while it is running we should
92. In case of a reluctance motor, when the load is increased so that it cannot maintain synchronous speed the motor will
93. Which of the following motors has two separate windings on the motor ?
94. A shaded pole motor does not possess
95. In a A.C. series motor armature coils are usually connected to commutator
96. Locked rotor current of a shaded pole motor is ________.
97. A universal motor is one which.
98. A repulsion motor is equipped with
99. The capacitors used in single-phase capacitor motors have no
100. If a D.C. series motor is operated on A.C. supply, it will
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