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Free download in PDF Friction Short Questions & Answers for competitive exams. These Friction Objective Questions with Answers are important for Board Exams as well as competitive exams like IIT-JEE, AIIMS, NEET and other Pre-Medical and Engineering Exams. These short solved questions or quizzes are provided by Gkseries.
41
Which of the following is used in powdered form as lubricant?
[A]
Graphite
[B]
Chalk
[C]
Salt
[D]
Sugar
42
Increasing friction is necessary for which of the following?
[A]
Free wheel of bicycle
[B]
Bicycle handle bar
[C]
Chain of bicycle
[D]
Ball bearing in front wheel
Answer: Bicycle handle bar
43
Least amount of friction is required in which of the following sports?
[A]
Car Race
[B]
Football
[C]
Ice Skating
[D]
none of these
44
Which motion has magnitude of static frictional force directly proportional to normal reaction?
[A]
Actual motion
[B]
Impending motion
[C]
Both a. and b.
[D]
All of above
45
Frictional force depends on ________
[A]
surface area in contact
[B]
roughness of surface
[C]
both a. and b.
[D]
All of the above
Answer: roughness of surface
46
Which belt is used to transmit power at high speeds?
[A]
Flat belt
[B]
V belt
[C]
Both a. and b.
[D]
None of the above
47
What is the relation between tight side and slack side for a flat belt?
[A]
(Tight side x slack side) = eμβ
[B]
(Tight side / slack side) = eμβ
[C]
(Tight side + slack side) = eμβ
[D]
None of the above
Answer: (Tight side / slack side) = eμβ
48
Rolling friction is smaller than?
[A]
Sliding friction
[B]
Static friction
[C]
Fluid friction
[D]
All of the above
49
Which one of these characteristics does a smooth surface has?
[A]
Less frictional force
[B]
More frictional force
[C]
Sometimes less and sometimes more force
[D]
All of above
Answer: Less frictional force
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