Theory of Machines MCQ with Answers

16) The two links OA and OB are connected by a pin joint at O. If the link OA turns with angular velocity ?₁ rad/s in the clockwise direction and the link OB turns with angular velocity ?₂ rad/s in the c

Answer is:

( ?₁ - ?₂)r

17) A disturbing mass m1 attached to the rotating shaft may be balanced by a single mass m₂ attached in the same plane of rotation as that of m₁, such that (where r₁ and r₂ are the radii o

Answer is:

m₁r₁ = m₂r₂

18) In railway axle boxes, the bearing used is

Answer is:

double row spherical roller bearing

19) When the two elements of a pair have a surface contact when relative motion takes place and the surface of one element slides over the surface of the other, the pair formed is known as a

Answer is:

lower pair

20) The two elements of a pair are said to form a __________ when they permit relative motion between them.

Answer is:

kinematic pair

Explanation:

The two links or elements of a machine, when in contact with each other, are said to form a pair. If the relative motion between them is completely or successfully constrained (i.e. in a definite direction), the pair is known as kinematic pair.

16) The two links OA and OB are connected by a pin joint at O. If the link OA turns with angular velocity ?1 rad/s in the clockwise direction and the link OB turns with angular velocity ?2 rad/s in the c

( ?1 - ?2)r

17) A disturbing mass m1 attached to the rotating shaft may be balanced by a single mass m2 attached in the same plane of rotation as that of m1, such that (where r1 and r2 are the radii o

m1r1 = m2r2

18) In railway axle boxes, the bearing used is

double row spherical roller bearing

19) When the two elements of a pair have a surface contact when relative motion takes place and the surface of one element slides over the surface of the other, the pair formed is known as a

lower pair

20) The two elements of a pair are said to form a __________ when they permit relative motion between them.

kinematic pair

16) The two links OA and OB are connected by a pin joint at O. If the link OA turns with angular velocity ?₁ rad/s in the clockwise direction and the link OB turns with angular velocity ?₂ rad/s in the c

( ?₁ - ?₂)r

17) A disturbing mass m1 attached to the rotating shaft may be balanced by a single mass m₂ attached in the same plane of rotation as that of m₁, such that (where r₁ and r₂ are the radii o

m₁r₁ = m₂r₂