Express the change in internal energy of the system when no work is done on the system but a certain amount of heat, say q, is taken out from the system and given to the surroundings.

Consider the two timber posts that measure 150 millimeters square and 4 meters high. These posts are subjected to an axial load of 108 kN each. How much will they be shorten because of the load, if one post is made of pine timber (E = 7800 MPa)and the other of Australian blackwood (E = 15300 MPa)?

Which option is the correct characteristics of the oil-tempered wire?

What is the significance of the above given symbol in work study technique?

In radial tyres

The air gap between the central electrode and ground (or side) electrode of a spark plug is around

The intensity of direct longitudinal stress in the cross-section at any point distant r from the neutral axis, is proportional to

A closely coiled helical spring of radius R, contains n turns and is subjected to an axial loadW. If the radius of the coil wire is r and modulus of rigidity of the coil material is C, the stress developed in the helical spring is

The coefficient of friction depends on

A beam is said to be of uniform strength, if

A rectangular bar of width b and height h is being used as a cantilever. The loading is in a plane parallel to the side b. The section modulus is