MCQ - TNPSC JTO
JTO - 540 - Trade - Workshop Calculation Science
UNIT - 7 - Friction
161)
The force of friction always acts:
A.
B.
C.
D.
162)
If no external force acts, a body at rest stays at rest because of:
A.
B.
C.
D.
163)
Which type of friction is always less than others?
A.
B.
C.
D.
164)
Coefficient of rolling friction is:
A.
B.
C.
D.
165)
In workshop tools, high friction causes:
A.
B.
C.
D.
166)
Choose the correct matching pair:
A.
B.
C.
D.
167)
Increasing lubrication between machine parts leads to:
A.
B.
C.
D.
168)
Friction between tool and workpiece during machining affects:
A.
B.
C.
D.
169)
Friction can be useful in:
A.
B.
C.
D.
170)
A frictionless surface means:
A.
B.
C.
D.
171)
The main cause of friction is:
A.
B.
C.
D.
172)
Which device uses friction to function properly?
A.
B.
C.
D.
173)
Which of the following is not affected by friction?
A.
B.
C.
D.
174)
Which action helps to reduce sliding friction?
A.
B.
C.
D.
175)
A flat metal plate resting on a table experiences:
A.
B.
C.
D.
176)
Friction helps in which of the following activities?
A.
B.
C.
D.