If a spring is cut down into two springs, the stiffness of cut springs will be _________________?

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

When two springs are in series (having stiffness K), the equivalent stiffness will be________________?

A. K
B. K/2
C. 2k
D. Kia

Form coefficient of spring is _____________________?

A. Ratio of coil diameter to wire diameter
B. Load required to produce unit deflection
C. Its capability of storing energy
D. Concerned with strength of wire of spring

Spring index is___________________?

A. Ratio of coil diameter to wire diameter
B. Load required to produce unit deflection
C. Its capability of storing energy
D. Indication of quality of spring

The piston rod of a steam engine is usually connected to the cross head by means of__________________?

A. Bolted joint
B. Kunckle joint
C. Cotter joint
D. Universal joint

Gear box is used___________________?

A. To produce torque
B. For speed reduction
C. To obtain variable speeds
D. To increase efficiency of system

Castle nut is a locking device in which__________________?

A. One smaller nut is tightened over main nut and main nut tightened against smaller one by loosening, creating friction jamming
B. A slot is cut partly is middle of nut and then slot reduced by tightening a screw
C. A hard fiber or nylon cotter is recessed in the nut and becomes threaded as the nut is screwed on the bolt causing a tight grip
D. Through slots are made at top and a cotter pin is passed through these and a hole in the bolt, and cotter pin spitted and bent in reverse direction at other end

A backing ring is used inside the pipe joint when making a___________________?

A. Butt weld
B. Fillet weld
C. Sleeve weld
D. Socket weld

A tube has the following advantage over pipe_________________?

A. Lighter and easier to handle
B. Greater shock absorption
C. Smoother inside walls
D. All of the above

For tight leakage joints, following type of thread is best suited ____________________?

A. metric
B. buttress
C. square
D. acme