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91
The heated parts of an electrical machine dissipate heat into their surroundings by which of the followingmodes of heat dissipation ?
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Answer: Option D
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92
The action of electromagnetic machines can be related to which of the following basic principles ?
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Answer: Option D
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93
Which of the following properties a damping oil must possess ?
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Answer: Option E
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94
In transformers using hot rolled steel, the cross-section of the yoke is made about _____ greater than that of the core
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Answer: Option C
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95
An induction meter can handle current up to
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Answer: Option D
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96
_______ is extensively used for those portions of magnetic circuit which carry steady flux and need superior mechanical properties ?
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Answer: Option B
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97
In a vibrating reed frequency meter the natural frequencies of two adjacent reeds have a difference of
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Answer: Option C
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98
Multiple inlet system of air cooling of turbo-alternators can be used for machines of rating upto
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Answer: Option C
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99
The household energy meter is
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Answer: Option C
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100
The flash point of transformer oil should be higher than
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Answer: Option D
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