MCQ - TNPSC JTO
JTO - 540 - Trade - Workshop Calculation Science
540 - UNIT - 08 - Centre of Gravity Levers and Simple
33)
Inclined plane is mainly used to:
A.
B.
C.
D.
34)
The efficiency of a simple machine can never be more than:
A.
B.
C.
D.
35)
A system with multiple pulleys is called:
A.
B.
C.
D.
36)
If a machine has MA = 5, it means:
A.
B.
C.
D.
37)
A MA < 1 is used in machines designed to:
A.
B.
C.
D.
38)
Which of the following increases VR without changing MA?
A.
B.
C.
D.
39)
Higher VR in a machine means:
A.
B.
C.
D.
40)
Hooke’s Law is valid only up to:
A.
B.
C.
D.
41)
Which one of the following is NOT elastic?
A.
B.
C.
D.
42)
Stress and strain are related through:
A.
B.
C.
D.
43)
A wedge is a modification of which simple machine?
A.
B.
C.
D.
44)
Strain is unitless because:
A.
B.
C.
D.
45)
A higher factor of safety means:
A.
B.
C.
D.
46)
The design stress used in engineering is usually:
A.
B.
C.
D.
47)
The stability of an object increases when its centre of gravity is
A.
B.
C.
D.
48)
Which shape has its centre of gravity at the center of the base?
A.
B.
C.
D.