MCQs: The sun’s rays reach the earth without heating the atmosphere, this is due to
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MCQs: Direct resistance heating method is used in
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MCQs: In indirect core type of furnace, the element is heated by induction, which transfer the heat to the charge by
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MCQs: For improving the power factor of coreless type induction furnace,
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MCQs: High frequency eddy current heating is used for
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MCQs: The rate of heat produced by dielectric heating is increased by
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MCQs: The metal which can be extracted from its ore by the method of electrolysis is /are
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MCQs: The energy required for refining of gold in kWh / tone is about
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MCQs: Throwing power is the ability of the electrolyte to produce
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MCQs: Reduction factor of a source of light is the ratio of its
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MCQs: According to second law of illumination, the illumination at any point on an inclined surface is
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MCQs: According to the first law of illumination, the illumination of a surface due to a source of light is
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MCQs: The polar curves are used to find out the
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MCQs: The artificial source of light is
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MCQs: Nitrogen is added with the argon in an incandescent lamp to
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MCQs: The inside wall of fluorescent tube is coated with
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MCQs: In internal combustion engine drive, a gear box is
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MCQs: In diesel electric drive,
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MCQs: For running at half of the maximum speed, the batteries of battery electric drive are connected in
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MCQs: In tramways,
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