11. The ball bearings are provided with a cage-
A. to facilitate slipping of balls
B. to prevent the lubricant from flowing out
C. to maintain the balls at a fixed distance apart
D. to reduce friction
Read More- Define Heat Work, Similarities, Difference
12. For maximum power, the velocity of the belt will be-
A. v(T/m)
B. v(T/2m)
C. v(T/3m)
D. None of these
13. The property of a material which enables it to be drawn into wires with the application of a tensile force is called-
A. elasticity
B. plasticity
C. malleability
D. ductility
14. Which of the following statement is correct, for the two shafts connected in parallel?
A. The torsional stiffness of each shaft is the same
B. Shear stress in each shaft is the same
C. The angle of twist of each shaft is the same
D. Torque in each shaft is the same
15. When a helical compression spring is cut into halves, the stiffness of the resulting spring will be-
A. 1/2
B. 1/4
C. same
D. double
Read More- Thermodynamics: Objective Questions Answers