CV A is the mass inside a piston/ cylinder, and CV B is the mass plus the piston outside, which is the standard atmosphere. Write the energy equation and work term for the two CVs, assuming we ...Read more
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Find the moment of inertia of a hollow section shown in Fig.25 about an axis passing through its center of gravity or parallel X-X axis.
During the compression stroke of a reciprocating compressor, the work done to the air in the cylinder is 95 kJ/kg and 43 kJ/kg of heat is rejected to the surroundings. Determine the change in internal energy.
0.25 kg of air at a pressure of 1 bar occupies a volume of 0.3 m3. If this air expands isothermally to a volume of 0.9 m3, find the (i) initial temperature, (ii) final temperature (iii) external work ...Read more
In the system shown, two copper rods AB and CD with a diameter of 15 mm are fixed to a wall and a rigid plate, along with a steel rod EF with a diameter of 20 mm. Given ...Read more
A casting weighing 9 kN hangs freely from a rope which makes 2.5 turns around a drum of 300 mm diameter revolving at 20 rpm. The other end of the rope is pulled by a man. The coefficient ...Read more
An aeroplane is flying at 21·5 m/s at a low alti- tude where the velocity of sound is 325 m/s. At a certain point just outside the boundary layer of the wings, the velocity of air relative to ...Read more
A cable loop of length 1.5 m is placed around a crate. Knowing that the mass of the crate is 300 kg, determine the tension in the cable for each of the arrangements shown.
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What is caulking and fullering?
The composite bar shown in Fig. is subjected to a tensile force of 30 kN. The extension observed is 0.44. Find the Young’s modulus of brass, if Young’s modulus of steel is 2 x 10⁵ N/mm².
