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

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 instantaneous centres which vary with the configuration of mechanism, are called

A

permanent instantaneous centres

B

fixed instantaneous centres

C

neither fixed nor permanent instantaneous centres

D

none of the mentioned

The instantaneous centres which vary with the configuration of the mechanism, are called

A

permanent instantaneous centres

B

fixed instantaneous centres

C

neither fixed nor permanent instantaneous centres

D

none of the mentioned

The absolute configuration for compounds X and Y respectively are
Basics of Organic Reaction Mechanism mcq question image

A

R, S

B

S, R

C

R, R

D

S, S

Which of the below are inversions of slider crank mechanism?
1. Oscillating cylinder engine mechanism
2. Toggle mechanism
3. Radial cylinder engine mechanism
4. Quick return mechanism

A

1, 2 and 4

B

2, 3 and 4

C

1, 2 and 3

D

1, 3 and 4

Match the following Types of mechanism Motion achieved P. Scott Russel mechanism 1. Intermittent motion Q. Geneva mechanism 2. Quick return motion R. Off set slider crank mechanism 3. Simple harmonic motion S. scotch Yoke mechanism 4. Straight line motion

A

P-2,Q-3,R-1,S-4

B

P-3,Q-2,R-4,S-1

C

P-4,Q-1,R-2,S-3

D

P-4,Q-3,R-1,S-2

The instantaneous centres, which moves as the mechanism moves but joints are of permanent nature, are called permanent instantaneous centres.

A

True

B

False

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

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

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

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

A

15

B

28

C

30

D

8

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

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