1) In the following, the advantage of plane washer is
covered the clearance of a big hole
divide the force in the large area
provide a correct support of nut
represented a good looking of job
2) Tab washer is used for
provide a good support to nut
for automatic locking of nut
decrease the machines vibrations
for locking the nut
3) A spring washer is used for
a) protection for deterioration from nuts
b) to tighten the nuts in a vibration place
c) Both (a) and (b)
d) None of the above
4) For the making of soft solder, lead is mixed with
zinc
silver
copper
tin
5) Which of the following is not a type of key
sunk
taper
saddle
stud
6) Which fastener is permanent?
Welding
Forging
Riveting
Nut-bolt
7) Which fastner is semi-permanent?
Welding
Nut-bolt
Soldering
Brazing
8) Which fastener is temporary?
Nut-bolt
Welding
Soldering
None of these
9) Which screw is used to connect the collar and shaft in a position?
Hexagonal head screw
Pan head screw
Hexagonal socket set screw
Square head screw
10) Which type of washer is used for locking the nut by bending the washer against the side of the nut?
Locking plate
Locking washer with lug
Tab washer
Spring washer
11) Why the woodruff keys are used on small tapered shafts with assembly?
It is less expensive
It takes the shear stress
It is easy to fit and self align with key way to hub
It takes heavy load
12) The split pins are used to lock the nuts. What Will happen if the same split pin is continuously used in an assembly?
Slot cut in the nut reduces the strength of the pin
While reassembling result is misalignment between the hole in the bolt and nut in the slot and loose its strength
The pin does not withstand load
The pin may break off
13) State the reason, why anti-fatigue bolts are used in connecting rod big ends in an engine assembly?
To take the loads when the assembly is subjected to alternating load conditions
To avoid loosening of parts of the assembly
To withstand the shock of the assembly during motion
To have firm grip during movement of the assembly
14) In riveted joints, the pitch of rivet is the minimum distance between the rivets, and it should be three times of rivet diameter. If the pitch of rivet is too close it will
(a) lead to gaping
(b) be difficult for riveting
(c) split the edge of joint
(d) tear the metal along the centre line of the rivets
15) The woodruff key is in semicircular shape, which is
removable from the assembly without removing the hub
used on tapered shaft and hub assembly
transmitting more torque than other type of keys
placed between the flat surface of shaft and hub
16) Bolts are fitted with clearance hole in an assembly. The size of the bolt hole is slightly larger than the bolt diameter. Why?
To fasten the components
To lock the components to avoid loosening of parts
To grip components firmly
To adjust slight misalignment in assembly
17) The type of key useful for fittings on tapered shaft is known as ...................
hollow saddle key
sunk key
woodruff key
feather key
18) Which washer is used for normal work?
Plain washer
Lock washer
Spring washer
None of these
19) For fitting a hollow saddle key
key is welded on shaft
no keyway is cut on the shaft
the key is fitted by means of screws
long keyway is cut on the shaft
20) A rivet is specified by the diameter of its
head
tail
shank
None of these
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