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71
Corona discharge is related to the operation of a/an
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Answer: Option B
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72
Thermal equivalent of electrical power in practical calculation is __________ kcal/kWh.
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Answer: Option B
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73
Upto the critical radius of insulation, added insulation, will
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Answer: Option B
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74
For grinding of softer materials, the grinding wheel should have __________ grain size.
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Answer: Option B
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75
Chromium molybdenum steel can not be welded using __________ welding.
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Answer: Option B
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76
Titanium can be easily welded using __________ welding.
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Answer: Option B
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77
The most suitable material for die casting is
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Answer: Option B
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78
Lead pencil contains
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Answer: Option A
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79
The refractory lining of the bottom in a basic electric arc furnace is made of
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Answer: Option C
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80
In TIG welding, thoriated tungsten electrodes are used, because it
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Answer: Option B
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