Question: Spring index is___________________?

• 1. ratio of coil diameter to wire diameter
• 2. load required to produce unit deflection
• 3. its capability of storing energy
• 4. indication of quality of spring

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

• 1. bolted joint
• 2. kunckle joint
• 3. cotter joint
• 4. universal joint

Question: Gear box is used___________________?

• 1. to produce torque
• 2. for speed reduction
• 3. to obtain variable speeds
• 4. to increase efficiency of system

Question: Castle nut is a locking device in which__________________?

• 1. one smaller nut is tightened over main nut and main nut tightened against smaller one by loosening, creating friction jamming
• 2. a slot is cut partly is middle of nut and then slot reduced by tightening a screw
• 3. 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
• 4. 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

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

• 1. butt weld
• 2. fillet weld
• 3. sleeve weld
• 4. socket weld

Question: A tube has the following advantage over pipe_________________?

• 1. lighter and easier to handle
• 2. greater shock absorption
• 3. smoother inside walls
• 4. all of the above

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

• 1. metric
• 2. buttress
• 3. square
• 4. NPT (national pipe threads)

Question: The function of cutting oil when threading a pipe is to___________________?

• 1. provide cooling action
• 2. lubricate the dies
• 3. help remove chips
• 4. all of the above

Question: Split nut is a locking device in which_________________?

• 1. one smaller nut is tightened over main nut and main nut tightened against smaller one by loosening, creating friction jamming
• 2. a slot is cut partly in middle of nut and then slot reduced by tightening screw
• 3. 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
• 4. through slots are made at top and a cotter-pin is passed through these and a hole in the bolt, and cotter pin splitted and bent in reverse direction at the other end

Question: A bench vice has following type of threads____________________?

• 1. metric
• 2. square
• 3. buttress
• 4. acme