The instrument used for the measurement of expansion and contraction due to change in temperature, is known as

Related MCQs

• A steel rod of 3m is manufactured at 250C the temperature of rod is increases to 1250C. If free expansion is 3.6mm, what is the temperature stresses produced if 1.5mm expansion is permitted?
• Change in length of the rod due to change in temperature depends on…
• During free expansion due to temperature rise or fall,
• The temperature strain in a bar is ……………..proportional to the change in temperature.
• Change in length of a rod due to change in depend on _.
• A rail 20 m long is prevented from expansion at both end . If the temperature is raised by 30 0C, Stress induced in rail is.. E=200 Gpa,α =12x10-6/°C
• A steel rod of 3m length is manufactured at 250C the temperature of this rod increases to 1250C. What is the free expansion? Take E=200Gpa, α=12*10-6/0C,diameter=12mm
• The thermal stress is given by where α = coeffeicient of linear expansion T = Rise in temperature
• A steel strip is welded to a copper strip of the same dimensions along the length. The coefficient of thermal expansion for copper is greater than that for steel. If temperature is increased, ___ .
• If there is a fall in the temperature of a composite body, then a member having greater coefficient of linear expansion will be subjected to compressive stress.