When a belt drive is transmitting maximum power, Driving tension on slack side is equal to centrifugal tension Effective tension is half of centrifugal tension Driving tension on tight side is twice the centrifugal tension Effective tension is equal to centrifugal tension TRUE ANSWER : ? YOUR ANSWER : ?
In unilateral system of tolerance, the tolerance is allowed on One side of the actual size One side of the nominal size Both sides of the nominal size Both sides of the actual size TRUE ANSWER : ? YOUR ANSWER : ?
In a steam engine, the piston rod is usually connected to the cross-head by means of a Cotter joint Knuckle joint Universal joint Oldham coupling TRUE ANSWER : ? YOUR ANSWER : ?
The stress in the threaded part of the bolt will be __________ as compared to the shank. None of these Same Higher Lower TRUE ANSWER : ? YOUR ANSWER : ?
When an open coiled helical compression spring is subjected to an axial compressive load, the maximum shear stress induced in the wire is (where D = Mean diameter of the spring coil, d = Diameter of the spring wire, K = Wahl's stress factor, and W = Axial compressive load on the spring) (2WD/ πd3) × K (8WD/ πd3) × K (4WD/ πd3) × K (WD/ πd3) × K TRUE ANSWER : ? YOUR ANSWER : ?
The power transmitted by the belt drive can be increased by Increasing the initial tension in the belt Dressing the belt to increase the coefficient of friction Increasing wrap angle by using idler pulley All of these TRUE ANSWER : ? YOUR ANSWER : ?
A long helical spring having a spring stiffness of 12 kN/m and number of turns 20, breaks into two parts with number of turns 10 each in both the parts. If the two parts are connected in series, then the softness of the resultant spring will be 6 kN/m 30 kN/m 12 kN/m 24 kN/m TRUE ANSWER : ? YOUR ANSWER : ?
The rated life of a bearing varies Inversely as cube of load Inversely as fourth power of load Inversely as square of load Directly as load TRUE ANSWER : ? YOUR ANSWER : ?
In cross or regular lay ropes Direction of twist of wires in strands is opposite to the direction of twist of strands Direction of twist of wires and strands are same Wires are not twisted Wires in two adjacent strands are twisted in opposite direction TRUE ANSWER : ? YOUR ANSWER : ?
A V-belt designated as B 4430 LP has 4430 mm as diameter of large pulley 4430 mm as nominal pitch length 4430 mm as centre distance between pulleys 4430 mm as diameter of small pulley TRUE ANSWER : ? YOUR ANSWER : ?