Which of the following dimensions is/are primary dimension/s? This is the maximum and minimum wavelength for Ultraviolet rays. Mcq on heat transfer helps in clear and deep understanding. a. it does not provide any knowledge of the mechanism, b. it is necessary to know theoretically the variables which influence the phenomena, Q183. units is (a) kcal/kg m2 °C (b) kcal-m/hr m2 °C (c) kcal/hr m2 °C (d) kcal-m/hr °C (e) kcal-m/m2 °C. In desert areas, there is large difference between day and night temperatures mainly because of, a. presence of carbon dioxide in air as it acts as barrier for emanating infrared radiation from the earth surface, b. presence of water vapour in air as it acts as barrier for emanating infrared radiation from the earth surface, c. absence of carbon dioxide in air as it acts as barrier for emanating infrared radiation from the earth surface, d. absence of water vapour in air as it acts as barrier for emanating infrared radiation from the earth surface. a. the analysis of a system in which it is assumed to be at no uniform temperature, b. the analysis of a system in which it is assumed to be at uniform temperature, c. the analysis of a system in which it is assumed to be at either uniform or no uniform temperature. Download CBSE Class 5 Science Simple Machines MCQs in pdf, Science chapter wise Multiple Choice Questions free. It is a network of neurons in which all the neurons are connected to each other. The potential difference in an electrical system, is analogously considered as, a. a temperature difference in the heat transfer system, b. a current flow in the heat transfer system, c. a resistance in the heat transfer system. Ein zweiphasiger, iterativer Lern-Algorithmus kann verwendet werden, um die Kopplungsmatrizen zwischen den Modellneuronen zu justieren. Q132. What is the intensity of radiation (I)? Mechanical Engineering Heat Transfer Unit of thermal conductivity in M.K.S. Which theory is widely used to determine the heat transfer coefficient for film condensation on surfaces? The values of reflectivity (ρ), absorptivity (α) and transmissivity (τ) of a body are depend upon, Q207 . A Boltzmann machine is a network of symmetrically connected, neuron-like units that make stochastic decisions about whether to be on or off. Your email address will not be published. 12. Which of the following bodies will not be able to emit radiation continuously? Incident flux = 800(8 – 2) – 4800 W/m2. When two bodies of areas A1and A2 are exchanging radiant heat energy, F12 is the shape factor of A1with respect to A2 and F21 is the shape factor of A2 with respect to A1, then what is the correct relation for reciprocating theorem? Q182. Boltzmann machines for structured and sequential outputs 8. Q227. Q203. This may seem strange but this is what gives them this non-deterministic feature. Posthoc interpretation of support-vector machine models in order to identify features used by the model to make predictions is a relatively new area of research with special significance in the biological sciences. Q101. What is the formula of the thermal resistance for convection at the outer surface of spherical shell of inner and outer radii as ri and ro respectively? Q40. For the same inlet and exit temperatures of two fluids, the LMTD for counterflow is always. Q131. What is the correct formula for the total emissive power of the gray body (Eg)? When the thickness of insulation is less than the critical thickness of the insulation, then the heat transfer rate of insulated pipe, a. will be more than the heat transfer rate from the same pipe without insulation, b. will be less than the heat transfer rate from the same pipe without insulation, c. will become equal to the heat transfer rate from the same pipe without insulation, Q103. Which of the following gases is/are capable to emit and to absorb radiant heat energy? Q57. Assume a turbulent flow of a fluid on a flat plate. This is a limitation of the method of, a. analogy between heat, mass and momentum transfer, b. approximate analysis of the boundary layer equation, c. dimensional analysis coupled with experimental data, d. exact mathematical analysis of the boundary layer equation. What is the effect of change in outer radius of the hollow cylinder on the thermal resistance of conduction? Boltzmann machines have a simple learning algorithm (Hinton & Sejnowski, 1983) that allows them to discover interesting features that represent complex regularities in the training data. Q98. Q139. Storage type heat exchanger or regenerator, c. Direct contact type heat exchanger or mixer. Q165. Q88. How does heat flux change with increasing excess temperature in transition boiling regime of boiling heat transfer process? As the radius increases in hollow cylinder the temperature, c. it depends upon the direction of heat flow. Generally the external thermal resistance between the surface of the body and the environment is, a. less than the internal conduction resistance in the body, b. more than the internal conduction resistance in the body, c. same as the internal conduction resistance in the body. a. the ratio of the temperature gradient at the surface [(∂T / ∂y)y=0] to the reference temperature gradient [(Tw – T∞) / l], b. the ratio of the reference temperature gradient [(Tw – T∞) / l] to the temperature gradient at the surface [(∂T / ∂y)y=0], c. the sum of the temperature gradient at the surface [(∂T / ∂y)y=0] and the reference temperature gradient [(Tw – T∞) / l], d. the sum of the reference temperature gradient [(Tw – T∞) / l] and the temperature gradient at the surface [(∂T / ∂y)y=0], Q188. The reflection in which the angle of incident is equal to the angle of reflection is called as. They don’t have the typical 1 or 0 type output through which patterns are learned and optimized using Stochastic Gradient … Answer: Boltzmann Machine is used to optimize the solution of a problem. What is the formula for maximum temperature (Tmax) at the center of a long and solid cylindrical electric wire of radius r? It is stochastic (non-deterministic), which helps solve different combination-based problems. Q61 In greenhouse effect, the only infrared radiations, a. are allowed to exit from the interior surface, b. are not allowed to exit from the interior surface, Q62. In general which among the following equations is correct for change in energy of element during a time span dt? Boltzmann Machines; Autoencoders; Let us learn what exactly Boltzmann machines are, how they work and also implement a recommender system which recommends whether the user likes a movie or not based on the previous movies watched. Q244. We … The layer above the laminar sublayer with some turbulence and still having importance of viscous action is called as, Q125. a. Analogy between heat, mass and momentum transfer, b. Dimensional analysis coupled with experimental data, c. Approximate analysis of the boundary layer equation, d. Exact mathematical analysis of the boundary layer equation. Which of the following is/are example/s of heat exchanger? Q67. We say that they are restricted because neurons within the same layer are not connected. a. a body with very high temperature placed in air medium, b. a body with temperature 0 oC placed in air medium, c. a body with temperature 0 oC placed in vacuum, Q242. Plate temperature is higher than the fluid temperature, c. Plate temperature is equal to the fluid temperature. 1986 − Rumelhart, Hinton, and Williams introduced Generalised Delta Rule. Boltzmann machines are graphical models, but they are not Bayesian networks. You missed on the real time test, but can read this ar… Restricted Boltzmann Machines As indicated earlier, RBM is a class of BM with single hidden layer and with a bipartite connection. A Boltzmann machine network involves learning a probability distribution from an original dataset and using it to make inference about unseen data. Consider that heat transfer is taking place through a fin having circular cross-sectional area, one dimensionally as shown in figure. T = Temperature of the fin at the distance x from the base of fine, and the constants C1 and C2 depend on the boundary conditions. Save my name, email, and website in this browser for the next time I comment. Deep Learning has made many practical applications of machine learning possible. For effective working of fins, the thickness of the fines should be, c. thickness of fin does not affect the fin effectiveness. a. Q34. Which of the following temperature difference is safer than other to consider in designing of heat exchangers? According to the Nusselt’s theory, to determine the heat transfer coefficient for film condensation on surfaces, a. the vapour should be pure, dry and saturated, c. heat transfer should be at steady state, Q202. The Boltzmann machine nodes are all connected so it measures all components equally … Q137. What is the purpose of using fins in a particular heat transfer system? Training data consists of lists of items with some partial order specified between items in each list. Q142. (23)A Deep Belief Network is a stack of Restricted Boltzmann Machines. MCQ: HEAT TRANSFER-2. Introduction. [M L– 1 T–2 ] is the dimensional formula for. When the layers of a composite wall are in series and the thermal resistance of every individual layer is given then the total thermal resistance of the composite wall is given by, a. substantiating lower value thermal resistance from higher value thermal resistance, c. multiplying both the thermal resistances, Q138. Forced Convective Heat Transfer (Part - 1), Convective Heat Transfer: One Dimensional (Part - 2), Convective Heat Transfer: One Dimensional (Part - 1). What is the correct formula for The Biot number? 1] Supervised ML. Transfer type heat exchanger or recuperator, b. a) Chilling effect of cold wind on a warm body, Q11. What is the temperature gradient in the conduction heat transfer? Where will be the fully developed turbulent layer of fluid established, if the plate is hotter than the fluid? a. the arithmetic mean temperature difference is less than LMTD of a same heat exchanger, b. the arithmetic mean temperature difference is more than LMTD of a same heat exchanger, c. the arithmetic mean temperature difference and LMTD of a same heat exchanger are equal. This allows the model to use content information to … The current in the electrical system is analogous to, a. the temperature in the heat transfer system, b. the heat flow in the heat transfer system, c. the thermal conductance in the heat transfer system, d. the thermal resistance in the heat transfer system. Python SciPy MCQ Questions And Answers. Which of the following is/are example/s of pool boiling? a. fin is effective for smaller value of thermal conductivity k, b. fin is effective for larger value of thermal conductivity k, c. thermal conductivity k does not affect the fin effectiveness, a. the ratio of actual heat transferred from fin area to the heat which would be transferred if entire fin area was at base temperature, b. the heat which would be transferred if entire fin area was at base temperature to the ratio of actual heat transferred from fin area, c. the heat which would be transferred if entire fin area was at minimum temperature to the ratio of actual heat transferred from fin area, d. the ratio of actual heat transferred from fin area to the heat which would be transferred if entire fin area was at minimum temperature, Q44. Each set of nodes can act as either inputs or outputs relative to the other set. h1 and h2 are the convection heat transfer coefficients on each side of wall. a. to maintain uniform spacing between tubes, Q54. Q117. The thermal conductivity is k. Q166. 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. Its energy function is as an extension of the energy function of the RBM: $$ E\left(v, h\right) = -\sum^{i}_{i}v_{i}b_{i} - \sum^{N}_{n=1}\sum_{k}h_{n,k}b_{n,k}-\sum_{i, k}v_{i}w_{ik}h_{k} - \sum^{N … 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. The compact heat exchangers are commonly used in. What is the mode of heat transfer in this condition? Boltzmann machines are used to solve two quite different computational problems. What is the ratio of the buoyancy force to the viscous force acting on a fluid called? ANS: (a) Plank’s law gives the radiation flux for a (a) A Black body (b) A Grey body ( c) All types of bodies (d) None. What is the mode of heat transfer from the hot surface to the adjacent layer of fluid which surrounds the surface? If the body or element does not produce heat, then the general heat conduction equation which gives the temperature distribution and conduction heat flow in an isotropic solid reduces to(∂T/∂x2) + (∂T/∂y2) + (∂T/∂z2) = (1/α)(∂T/∂t)this equation is known as. In the equation for the rate radiant heat energy from a perfect radiator q = σ A T4 the constant σ is called as, Q225. Initialize weights of perceptron randomly 2. A Boltzmann machine is a stochastic neural network that has been extensively used in the layers of deep architectures for modern machine learning applications. Q220. When does the general heat conduction equation which gives the temperature distribution and conduction heat flow in an isotropic solid reduce to Laplace equation? The solved questions answers in this Test: Stefan Boltzmann Law quiz give you a good mix of easy questions and tough questions. One of the most basic Deep Learning models is a Boltzmann Machine, resembling a simplified version of the Multi-Layer Perceptron. Q59. Which surface can be best described as a radiation shield? (a) Stefan’s Boltzmann Law (b) Kirchhoff’s Law (c) Wien’s Displacement Law (d) None. Thermal radiation takes place from a body by electromagnetic waves as a result of. Q79. Dabei wird die … Boltzmann machines are used to solve two quite different … Afin = the area of tube surface on which fines are provided, Aunfinned = the area of tube surface on which fines are not provided. Q187. Q112. The Boltzmann machine, using its hidden nodes will generate data that we have not fed in. 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