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ASSISTANT MOTOR VECHICLE TRASPORT SYLLABUS

Section A : Mechanical and Automobile Engineering – (120) Questions 1.  1.Strength of Materials : (15) Stress and strain, strain energy, shearing force and bending moment, moment of inertia, Principal planes and stresses, slope and deflection. Direct and bending stresses, Columns, Torsion and thin cylinders. 2. Mechanical Technology : (20) 2. Engineering materials, Non chip forming processes, chip Forming process : Turning, Drilling, Milling, Boring, Broaching, Finishing and super finishing, Gear production as well as NC-CNC and non conventional machining methods. 3. Theory of Machines : (20) Kinematics and dynamics of machines, role of friction, different power devices and power transmission equipments such as governers, gyroscopes etc., Applications of cams. 4. Hydraulics : (20) Fluids and their properties, Laminar and turbulent flow, Bernaulli’s Equation, Fluid pressure, Pascal’s Law, Surface tention, fluid flow and its measurement. 5. Thermal Engineering : (20)
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Defination of transient heat conduction

Transient heat conduction When temperature of body changes from time to time and With position is called Transient heat conduction. when temperature of body changes uniformly with time is called lumped capacitance system. Criteria for lumped capacitance system: biot no is less than or equal to 0.1
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Wiedemann and Franz Law

This law is generally related to the conductivity. According to this law Ratio of thermal conductivity and electrical conductivity is the same for all metals at the same temperature and this ratio is directly proportional to absolute temperature.
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Centrifugal pump construction and working.

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Centrifugal pump consist of the following parts 1)Inlet and outlet pipe 2)Casing 3)Impeller 4) Vanes. Working principle of Centrifugal pump:  Centrifugal pump creates an increase in pressure by transfer of mechanical energy from the electrical motor to the fluid through the rotating impeller. Inlet and outlet pipe.- One end of the inlet pipe is dipped in to the fluid fitted with a strainar and other end is connected to the casing. Similaraly one end of oulet pipe connected to casing and other to the discharge tub. Casing: Casing is the outermost part of the centrifugal pump. cross sectional area of the pump is goes on increasing along the sdischarge side.casing is generally made up of a stell or cast iron. Impeller- Impeller is the rotating part of the pump.which have vanes for pushing fluids in the casing.sometimes there will be guide vanes are also provided to guide the flow.Impeller is situated in the casing. Working: Suction pipe suck the water fro
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mechanical frawing instrument

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Types of Flow

Steady flow: the properties of fluid atevery point in the flow do not depend upon time, it is called a steady flow. Unsteady flow: the properties of fluid at every point in the flow do not depend upon time, it is called a unsteady flow. Uniform flow: The flow in which velocity do not change from point to point at any instant of time. Non uniform Flow: The flow in which velocity do change from point to point at any instant of time. Laminar Flow: the motion of the fluid particles of fluid is parallel to the pipe walls.or along a straight line. Turbulent flow: Motion of a fluid partical in zig zhag way ie do not parallel to pipe wall. Compressible flow: The flow in in which density of a fluid changes from point to point and spaces is called compressible flow. Incompressible flow: The flow in in which density of a fluid do not changes from point to point and spaces is called compressible flow. Newtonian flow: The flow in which shear stress of fluid is directly ptoportion
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Bimetallic Thermometer

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Bimetallic thermometers are made up of bimetallic strips formed by joining two different metals having different thermal expansion coefficients. The bimetal sensing element consists of a metal element shaped like a flat spring.  This element is two different metallic materials sandwiched together On heating of a strip the material,strip bends towards which having less thermal expansion coefficient.pointet is set at the end of the strip and which is moving on the angular or respective scale from which we can directly measure the temperature. eg.matrial like inver can be used consit of ferus and nikel joined with NI-MO alloy Advantages: 1)Low cost 2)Low maintaince Disadvantages: 1)Low responce and opearate at low temp due to creeping
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