
Kindly answer the questions in the box give below:
1. By which material, the steel rules are made of?
A Mild
steel
B Spring steel
C High speed steel
D High carbon steel
2 What is the reading
accuracy of a steel rule?
A 0.1 mm
B 0.2 mm
C 0.5 mm
D 0.6 mm
3 What is the purpose for the surface of the steel rule is coated with satin - chrome?
A To get accurate reading
B To make
good appearance
C To identify the graduation easily
D To reduce glare
and prevent rusting
A Chalk mixed with turpentine
B Chalk powder
mixed with water
C White lead powder mixed with water
D White lead powder mixed
with methylated spirit
6 In
which surface, Prussian
blue marking media
is to be used?
A On rough forging with oxidized surfaces 7 Which marking medium is commercially available with different colours ? A White wash 8 What will
happen, if the copper
sulphate coating marking medium
is not dried well?
A It will erase the
markings quickly 9 What is the use of centre punch? C To check the flatness of surfaces 10 How the fine setting can be done in firm joint caliper?
A By moving the pivoted legs
B On filed
(or) machine - finished surfaces
C On rough casting with oxidized surfaces
D On rough forgings and
casting with oxidized surfaces
B Prussian blue
C Copper
sulphate
D Cellulose lacquer
B Marking will immediately disappear
C The solution
may stick on the instrument
D One more layer
will form on the finished
surfaces
A To locate the holes to be drilled
B For serving lines on materials
D For measuring distance
between points
B By opening the tips by hand
C By adjusting legs on one end
D By lightly tapping
on a wooden surface