Virtual Labs

a: A machine transforms the available energy into some useful work, whereas in a structure no energy is transformed into useful work b: The parts of a machine move relative to one another, whereas the members of a structure do not move relative to one another. c: The links of a machine may transmit both power and motion, whereas the members of a structure transmit forces only. d: All the above statement

A kinematic chain is known as a mechanism when

a: Three of the links is fixed b: Two of the links is fixed c: One of the links is fixed d: None of the above

The Grubler’s criterion for determining the degrees of freedom (n) of a mechanism having plane motion is

a: N= 4(l-1)-3j b: N= 3(l-1)-2j c: N= 2(l-1)-2j d: N= (l-1)- j

What is the use of beam engine?

a: To convert oscillatory motion into rotary motion b: To convert rotary motion into oscillatory motion c: To convert rotary motion into reciprocating motion d: To convert reciprocating motion into rotary motion

How many revolute joints are there in a four bar mechanism

a: 1 b: 4 c: 6 d: 8

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