Total no of instantaneous centers of a machine having ‘n’ links, is

The total number of instantaneous centers for a mechanism consisting of n links are

A

$$\frac{{\text{n}}}{2}$$

B

n

C

n - 1

D

$$\frac{{{\text{n}}\left( {{\text{n}} - 1} \right)}}{2}$$

In a mechanism, the fixed instantaneous centers are those centers which

A

Remain in the same place for all configurations of the mechanism

B

Vary with the configuration of the mechanism

C

Moves as the mechanism moves, but joints are of permanent nature

D

None of the above

The number of links and instantaneous centers in a reciprocating engine mechanism are

A

4,4

B

4,5

C

5,4

D

4,6

According to Kennedy's theorem, if three bodies move relatively to each other, their instantaneous centers will lie on a

A

Straight line

B

Parabolic curve

C

Triangle

D

Rectangle

The instantaneous centers which vary with the configuration of mechanism are called

A

Permanent instantaneous centers

B

Fixed instantaneous centers

C

Neither fixed nor permanent instantaneous centers

D

None of the above

What is the number of instantaneous centers for an eight link mechanism?

A

15

B

28

C

30

D

8

According to Kennedy's theorem, if three bodies have plane motions, their instantaneous centers lie on

A

A triangle

B

A point

C

Two lines

D

A straight line

When two links are connected by a pin joint, their instantaneous center lies

A

On their point of contact

B

At the center of curvature

C

At the center of circle

D

At the pin joint

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

A machine P can print out one lakh books in 8 hours. Machine Q can print the same number of books in 10 hours while machine R can print them in 12 hours. All the machines are started at 9 A.M.While machine P is stopped at 11 A.M. and remaining two machines completed the work. Approximately at what at what time will the work time (to print one lakh books) be finished?

A

11.30 Am

B

12 Noon

C

12.30 Pm

D

11.35 am

Total no of instantaneous centers of a machine having ‘n’ links, is

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