CIL ME TECH Quiz 2

Work done in polytropic process (n<γ)is always______heat supplied.

γ – iron occurs at temperature of

In stable equilibrium for completely submerged bodies what is the relation between forces?

Which of the following is not a type of arc welding?

Of the radiant energy 350W/m² incident upon a surface 250W/m² is absorbed, 60W/m² is reflected and the remainder is transmitted through the surface. Workout the value for reflectivity for the surface material

The efficiency of the diesel cycle increases

A shaft with torsional stiffness (q) has a disc of mass moment of inertia (I) attached at the end, then the natural frequency (fn) of free torsional vibration of the shaft is given by:

Calculate the bearing life , if rating life for  bearings is 9000h and shaft is rotating at 1500rpm.

There is enthalpy drop only in.......blades in case of an impulse steam turbine