ISRO Scientist or Engineer Refrigeration & Air-Conditioning 2019

A liquid is boiling in a airtight vessel. Using an exhaust tube the vapour is pumped out at a faster rate. What will happento the liquid?

The equivalent evaporation rate (kg/hr) of a boiler producing 2000 kg/hr of steam with enthalpy content of 2426 kJ/kg from feed water at temperature 40 deg. C (liquid enthalpy = 168 kJ/kg and enthalpy of vaporization of water at 100 deg. C = 2258 kJ/kg) is

A cycle consisting of one constant pressure, one constant volume and two isentropic processes is known as

The maximum theoretical work obtainable, when a system interacts to equilibrium with a reference environment, is called

If a circular shaft is subjected to a torque T and a bending moment M, the ratio of the maximum shear stress to maximum bending stress is

A simply supported beamof length 3 mcarries a concentrated load of 12 kN at a distance of 1m from left support. The maximum bending momentin the beam is

A girder of uniform section and constant depth is freely supported over a span of 3 metres. The point load at the midpoint is 30 kN and Momentof inertia = $$15 \times 10^{-6} m^4$$ and youngs modulus = 200 GN/m$$^2$$. The deflection at centre will be

A copper rod 3 mm in diameter when subjected to a pull of 495 N extends by 0.07 mm over a gauge length of 100 mm. The youngs modulus for copper will be

When a body is subjected to three mutually perpendicular stresses of equal intensity, the ratio of direct stress to the expanding volumetric strain is known as

The bending moment in the centre of a simply supported beam carrying a uniformly distributed load of w per unit length is