MCQ - TNPSC JTO
JTO - 540 - Trade - Workshop Calculation Science
540 - UNIT - 08 - Centre of Gravity Levers and Simple
17)
Which of the following will have the lowest centre of gravity?
A.
B.
C.
D.
Answer: B
20)
In an ideal machine, which is true?
A.
B.
C.
D.
21)
Mechanical advantage is a number that is always:
A.
B.
C.
D.
22)
A machine with MA > 1 is useful to:
A.
B.
C.
D.
23)
VR of a single movable pulley is:
A.
B.
C.
D.
24)
In an inclined plane, VR is:
A.
B.
C.
D.
25)
Plastic materials are used where ______ is not required
A.
B.
C.
D.
26)
Which material has high Young's modulus?
A.
B.
C.
D.
27)
In the stress-strain curve, the elastic limit is the point where:
A.
B.
C.
D.
28)
After the yield point, the material becomes:
A.
B.
C.
D.
29)
Breaking point in a stress-strain curve represents:
A.
B.
C.
D.
30)
If ultimate stress is 300 MPa and working stress is 100 MPa, the factor of safety is:
A.
B.
C.
D.
31)
Which tool is used to find the centre of gravity of a 2D shape like a cardboard cut-out?
A.
B.
C.
D.
32)
Centre of gravity is important in which of the following professions?
A.
B.
C.
D.