The Grubler's criterion for determining the degrees of freedom (n) of a mechanism having plane motion is (where $$l$$ = Number of links and j = Number of binary joints)

The Kutzbach criterion for determining the number of degrees of freedom (n) is (where $$l$$ = number of links, j = number of joints and h = number of higher pairs)

A

n = 3($$l$$ - 1) - 2j - h

B

n = 2($$l$$ - 1) - 2j - h

C

n = 3($$l$$ - 1) - 3j - h

D

n = 2($$l$$ - 1) - 3j - h

A mechanism consisting of four links is called a __________ mechanism.

A

Simple

B

Compound

C

Binary

D

None of these

In a mechanism, usually one link is fixed. If the fixed link is changed in a kinematic chain, then relative motion of other links

A

will remain same

B

will change

C

will not occur

D

none of the mentioned

stand next to the lamppost and face west ,walk 20 yards and then turn 90 degrees clockwise. Walk another 10 yards and then turn 45 degrees anticlockwise. Walk another 15 yards, reverse you direction and walk 5 yards back. Turn 135 degrees clockwise and walk another 10 yards . In which direction are you now facing?

A

West

B

East

C

South

D

North

Plane P take off at 2:00 am and flies at a constants speed of Xmph. Plane Q takes off at 3:30 am and flies the same forte as plane p but travels at a constant X, how many hours after 3:30 am will plane Q overtake plan P?

A

1.5x/y +0.5

B

2

C

4

D

5

The relation between number of links ($$l$$) and number of joints (j) in a kinematic chain is

A

$$l = \frac{1}{2}\left( {{\text{j}} + 2} \right)$$

B

$$l = \frac{2}{3}\left( {{\text{j}} + 2} \right)$$

C

$$l = \frac{3}{4}\left( {{\text{j}} + 3} \right)$$

D

$$l = {\text{j}} + 4$$

The mechanism forms a structure, when the number of degrees of freedom (n) is equal to

A

0

B

1

C

2

D

– 1

If the opposite links of a four bar linkage are equal, the links will always form a

A

Triangle

B

Rectangle

C

Parallelogram

D

Pentagon

Number of vertical joints in a stretcher course is x times the number of joints in the header course, where x is equal to

A

$$\frac{1}{2}$$

B

1

C

2

D

$$\frac{1}{4}$$

Which of the following mechanism is an approximate straight line motion mechanism?

A

Watt’s mechanism

B

Grasshopper mechanism

C

Robert’s mechanism

D

All of the mentioned

The Grubler's criterion for determining the degrees of freedom (n) of a mechanism having plane motion is (where $$l$$ = Number of links and j = Number of binary joints)

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