MCQ - TNPSC JTO
JTO - 540 - Trade - Workshop Calculation Science
540 - UNIT - 08 - Centre of Gravity Levers and Simple
49)
Which of the following is NOT a simple machine?
A.
B.
C.
D.
50)
Which simple machine is used in a seesaw?
A.
B.
C.
D.
51)
The formula for mechanical advantage is:
A.
B.
C.
D.
52)
If a machine can lift 100 N with 20 N effort, its MA is:
A.
B.
C.
D.
53)
Velocity Ratio depends on the geometry of the machine, not on:
A.
B.
C.
D.
54)
In a gear system, VR is given by:
A.
B.
C.
D.
55)
Efficiency of a machine is reduced due to:
A.
B.
C.
D.
56)
Efficiency is calculated using the formula:
A.
B.
C.
D.
57)
An ideal elastic material returns to its original shape after:
A.
B.
C.
D.
58)
Unit of stress is:
A.
B.
C.
D.
59)
Necking occurs in which stage of stress-strain curve?
A.
B.
C.
D.
60)
Poisson’s ratio is the ratio of:
A.
B.
C.
D.
61)
Centre of gravity of a ring lies at its:
A.
B.
C.
D.
62)
Which factor does NOT affect the position of the centre of gravity?
A.
B.
C.
D.
63)
Which of these machines is found in scissors?
A.
B.
C.
D.
64)
The wheelbarrow is an example of which type of lever?
A.
B.
C.
D.