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MCQs: The thermal diffusivities for gases are generally_____________________?
Category: Mechanical Engineering Questions, Published by: teswesm
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MCQs: A grey body is one whose absorptivity _________________?
Category: Mechanical Engineering Questions, Published by: teswesm
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MCQs: Planck’s law holds good for________________?
Category: Mechanical Engineering Questions, Published by: teswesm
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MCQs: A perfect black body is one which_______________?
Category: Mechanical Engineering Questions, Published by: teswesm
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MCQs: If the temperature of a solid surface changes form 27°C to 627°C, then its emissive power changes in the ratio of___________________?
Category: Mechanical Engineering Questions, Published by: teswesm
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MCQs: In regenerator type heat exchanger, heat transfer takes place by___________________?
Category: Mechanical Engineering Questions, Published by: teswesm
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MCQs: Two plates spaced 150 mm apart are maintained at 1000°C and 70°C. The heat transfer will take place mainly by ___________________?
Category: Mechanical Engineering Questions, Published by: teswesm
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MCQs: Depending on the radiating properties, body will be transparent when________________?
Category: Mechanical Engineering Questions, Published by: teswesm
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MCQs: Absorptivity of a body will be equal to its emissivity___________________?
Category: Mechanical Engineering Questions, Published by: teswesm
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MCQs: The amount of radiation mainly depends on___________________?
Category: Mechanical Engineering Questions, Published by: teswesm
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MCQs: The ratio of the energy absorbed by the body to total energy falling on it is called_________________?
Category: Mechanical Engineering Questions, Published by: teswesm
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MCQs: The emissive power of a body depends upon its___________________?
Category: Mechanical Engineering Questions, Published by: teswesm
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MCQs: 40% of incident radiant energy on the surface of a thermally transparent body is reflected back. If the transmissivity of the body be 0.15, then the emissivity of surface is____________________?
Category: Mechanical Engineering Questions, Published by: teswesm
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MCQs: The total emissivity power is .defined as the total amount of radiation emitted by a black body per unit_______________?
Category: Mechanical Engineering Questions, Published by: teswesm
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MCQs: Depending on the radiating properties, a body will be black when_________________?
Category: Mechanical Engineering Questions, Published by: teswesm
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MCQs: According to Stefan’s law, the total radiation from a black body per second per unit area is proportional to____________________?
Category: Mechanical Engineering Questions, Published by: teswesm
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MCQs: The thermal diffusivities for solids are generally__________________?
Category: Mechanical Engineering Questions, Published by: teswesm
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MCQs: The ratio of the emissive power and absorptive power of all bodies is the same and is equal to the emissive power of a perfectly black body. This statement is known as_________________?
Category: Mechanical Engineering Questions, Published by: teswesm
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MCQs: Depending on the radiating properties, a body will be white when_________________?
Category: Mechanical Engineering Questions, Published by: teswesm
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MCQs: Depending on the radiating properties, a body will be opaque when _________________?
Category: Mechanical Engineering Questions, Published by: teswesm
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