Assistant Director (Engineering -Mechanical) | 11.01.2019 MCQ 28+
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A beam supporting a uniformly distributed load over its entire length L is pinned at one end and passes over a roller support at a distance x from the other end . The value of x such that the greatest bending moment in the beam is as small as possible, will be
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In a Diesel engine, during combustion the pressure may increase at a range of
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As the number of cylinders on multi cylinder engines increases the power to weight ratio
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Transverse fillet welds are designed for
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In are welding , the temperature of heat produced by the elcetric are is of the order of
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The maximum frictional force , which comes into play , when a body just begins to slide over the surface of the surface of the other body, is known as
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which of the following refrigerant has the lowest freezing point?
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The fuel mostly used in cement industry and in metallurgical processes is
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A process, in which the gas is heated or expanded in such a way that the product of its pressure and volume remains constant , is called
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If the depth of water in an open channel is greater than the critical depth, the flow is called
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If there are no externally induced flow velocities, then the Nusselt Number (Nu) does not depend upon
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Most of the oxy-acetylene welding is done with
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The process of removing metal by a cutter which is rotated against the direction of travel of the workpiece, is called
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which type of gears has point contact between two mating gears?
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A cantilever beam of length L carries a gradually varying load form zero at free and w per unit length at the fixed end. The maximum deflection lies at
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The bending moment on a section is maximum where shear force is
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The energy stored in a body when stained within elastic limit is known as
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The ratio of shear modulus to the modulus of elasticity for a poisson's ratio of 0.4 will be
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The scales form in heat exchanges after a period of operation and provide additional resistance to heat transfer with some heat transfer coefficient . The reciprocal of this scale heat transfer coefficient is called .
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which of the following number is applicable in open hydraulic structure such as spillways , where gravitational force is predominant ?
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which of the following components of reaction turbine increases the head on the turbine by an amount equal to the height of runner outlet above the tail race ?
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which component of fluid velocity is responsible for transmission of power through aerodynamic machine?
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The operation of machining several surface of a workpiece simultaneously is called
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How are the efficiencies of any heat engine (miu) and reversible heat engine (miuR) compared, when both are operating between same heat source and same heat sink?
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Determine power rating of an electric motor if it runs at 1440 rpm and line shaft transmits torque of 75 Nm. Assume Reduction ratio =1.6
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The columns whose slenderness ration is less than 80 , are known as
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The operation of making a cone -shaped enlargement of the end of a hole is known as
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The cavitation in a hydraulic machine is mainly due to