Antifriction bearings are__________________?

A. sleeve bearings
B. hydrodynamic bearings
C. thin lubricated bearings
D. ball and roller bearings

If two springs are in parallel then their overall stiffness will be_______________?

A. Half
B. Same
C. Double
D. Unpredictable

Belt slip may occur due to________________?

A. Heavy load
B. Loose belt
C. Driving pulley too small
D. All of the above

When a close coiled helical spring is compressed, its wire is subjected to________________?

A. Tension
B. Shear
C. Compression
D. All of the above

Spring stiffness is__________________?

A. Ratio of coil diameter to wire diameter
B. Load required to produce unit deflection
C. Its capability of storing energy
D. Its ability to absorb shocks

The shearing stresses in the inner face as compared to outer face of the wire in a heavy close coiled spring is_________________?

A. Larger
B. Smaller
C. Equal
D. Larger/smaller depending on diameter of spring coil

Which of the following pipe joints would be suitable for pipes carrying steam_____________?

A. Flanged
B. Threaded
C. Bell and spigot
D. Expansion

The edges of the plates for cylindrical vessels are usually bevelled to an angle of 80° for_________________?

A. Reducing stress concentration
B. Ease of manufacture
C. Safety
D. Fullering and caulking

When a nut is tightened by plaping a washer below it, the bolt will be subjected to following type of loads___________________?

A. Compression
B. Tension
C. Shear
D. Combined loads

The shear plane in case of bolts should_________________?

A. Be across threaded portion of shank
B. Be parallel to axis of bolt
C. Be normal to threaded portion of shank
D. Never be across the threaded portion