Power Generator

51. For given number of poles (2) and armature conductors, a lap winding will carry ___________a wave winding

1. more current than
2. same current as
3. less current than
4. half the current than

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52. For the same rating ___________ motor has the highest staring torque

1. shunt
2. differentially compounded
3. commutatively compound
4. series

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53. For the same rating ___________ motor has the least starting torque

1. commulatively compounded
2. shunt
3. series
4. differentially compounded

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54. For the same rating, a dc machine has ___________ an ac machine

1. the same weight as
2. less weight than
3. more weight than
4. half the weight than

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55. For the same rating, the size of low speed alternator is ___________ that of high speed alternator

1. about the same as
2. less than
3. more than
4. twice

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56. Four carbon zinc cell in series will provide about

1. 2Vdc
2. 6Vdc
3. 9Vdc
4. 8Vdc

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57. Galvanic cell is the other name of

1. voltaic cell
2. primary cell
3. secondary cell
4. solar cell

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58. High speed alternators are driven by

1. diesel engine
2. steam turbines
3. hydraulic turbines
4. diesel engine

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59. High voltage dc machines use what winding?

1. Lap
2. wave
3. either lap or wave
4. open circuit

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60. Hot bearings of a dc motor may be caused by

1. poor ventilation
2. loose coupling
3. incorrect voltage
4. lack of dirty lubricant

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