MCQs: The current in the electrical system is analogous to
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MCQs: The term in the heat transfer system which is analogous to the electrical resistance is called as
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MCQs: In turbulent flow of the fluid,
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MCQs: Mixing of fluid from regions of high temperature with the fluid from region of low temperature
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MCQs: The Nusselt modulus or Nusselt number is a convenient measure of
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MCQs: What is the correct formula for the Nusselt modulus or Nusselt number (Nu)?
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MCQs: Which among the following are the methods for estimation of convective heat transfer coefficient? (1) Analogy between heat, mass and momentum transfer (2) Dimensional analysis coupled with experimental data (3) Approximate analysis of the boundary layer equation (4) Exact mathematical analysis of the boundary layer equation
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MCQs: Which among the following methods for estimation of convective heat transfer coefficient are having some limitations? (1) Analogy between heat, mass and momentum transfer (2) Dimensional analysis coupled with experimental data (3) Approximate analysis of the boundary layer equation (4) Exact mathematical analysis of the boundary layer equation
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MCQs: Which method for estimation of convective heat transfer coefficient is mathematically simple and finds wide range of applications?
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MCQs: A thorough knowledge of the mechanism is necessary for the estimate of convective heat transfer coefficient so that the process can be adequately represented by mathematical equation. This is a limitation of the method of
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MCQs: What is/are the limitation/s of dimensional analysis for estimation of convection heat transfer coefficient?
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MCQs: What is the black body or an ideal radiator?
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MCQs: As a radiator, the black body emits the maximum possible thermal radiation
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MCQs: Which of the following sentences are correct for black body (1) The black body is a hypothetical body (2) The black body is a real body (3) The black body is used as a standard of perfection against which the radiation characteristics of other bodies are compared
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MCQs: What is the relation between emissive power of a real body (E) and emissive power of black body (Eb) when both are at same temperature? Where, α =absorptivity
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MCQs: The emissivity (ε) can be defined as the ratio of
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MCQs: What does the Kirchoff's identity state?
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MCQs: StefanBoltzmann law states that the energy radiated per unit area per unit time by the black body is
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MCQs: Which among the following sentences are correct for StefanBoltzmann law? (1) The StefanBoltzmann law gives the total emissive power of a black body. (2) The StefanBoltzmann law is based on quantum theory (3) The StefanBoltzmann law does not provide distribution of energy among different wavelengths
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MCQs: The relation derived for the total emissive power of the black body as a function of wavelength and based of quantum theory is known as
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