The usual clearance provided in hydrodynamic bearing per mm of diameter of shaft is___________________?
(A) 0.01 micron
(B) 0.1 micron
(C) 1 micron
(D) 10 microns
(D) 25 microns
Antifriction bearings are__________________?
(A) sleeve bearings
(B) hydrodynamic bearings
(C) thin lubricated bearings
(D) ball and roller bearings
(D) none of the above
If two springs are in parallel then their overall stiffness will be_______________?
(A) half
(B) same
(C) double
(D) unpredictable
(D) none of the above
Belt slip may occur due to________________?
(A) heavy load
(B) loose belt
(C) driving pulley too small
(D) all of the above
(D) none 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
(D) none 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
(D) none of the above
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
(D) unpredictable
Which of the following pipe joints would be suitable for pipes carrying steam_____________?
(A) flanged
(B) threaded
(C) bell and spigot
(D) expansion
(D) compression
The shock absorbing capacity of a bolt can be increased by___________________?
(A) tightening it properly
(B) increasing shank diameter
(C) grinding the shank
(D) using washer
(D) making shank diameter equal to core diameter of thread
If an application calls for stresses on screw threads in one direction only, then the following type of thread would be best suited ________________?
(A) square
(B) acme
(C) buttress
(D) BSW
(D) metric