The whitworth quick return motion mechanism is formed in a slider crank chain when the

Whitworth quick return mechanism is obtained by inversion of

A

slider crank mechanism

B

kinematic chain

C

five link mechanism

D

roller cam mechanism

The primary unbalanced force due to inertia of reciprocating parts in a reciprocating engine is given by (where m = Mass of reciprocating parts, $$\omega $$ = Angular speed of crank, r = Radius of crank, $$\theta $$ = Angle of inclination of crank with the line of stroke and n = Ratio of the length of connecting rod to radius of crank)

A

$${\text{m}}{\omega ^2}{\text{r}}\sin \theta $$

B

$${\text{m}}{\omega ^2}{\text{r}}\cos \theta $$

C

$${\text{m}}{\omega ^2}{\text{r}}\frac{{\sin 2\theta }}{{\text{n}}}$$

D

$${\text{m}}{\omega ^2}{\text{r}}\frac{{\cos2\theta }}{{\text{n}}}$$

The secondary unbalanced force due to inertia of reciprocating parts in a reciprocating engine is given by (where m = Mass of reciprocating parts, $$\omega $$ = Angular speed of crank, r = Radius of crank, $$\theta $$ = Angle of inclination of crank with the line of stroke and n = Ratio of the length of connecting rod to radius of crank)

A

$${\text{m}}{\omega ^2}{\text{r}}\sin \theta $$

B

$${\text{m}}{\omega ^2}{\text{r}}\cos \theta $$

C

$${\text{m}}{\omega ^2}{\text{r}}\frac{{\sin 2\theta }}{{\text{n}}}$$

D

$${\text{m}}{\omega ^2}{\text{r}}\frac{{\cos2\theta }}{{\text{n}}}$$

The velocity of piston in a reciprocating steam engine is given by (where $$\omega $$ = Angular velocity of crank, r = Radius of crank pin circle, $$\theta $$ = Angle turned by crank from inner dead center and n = Ratio of length of connecting rod to the radius of crank)

A

$$\omega {\text{r}}\left( {\sin \theta + \frac{{\sin 2\theta }}{{\text{n}}}} \right)$$

B

$$\omega {\text{r}}\left( {\cos\theta + \frac{{\cos2\theta }}{{\text{n}}}} \right)$$

C

$${\omega ^2}{\text{r}}\left( {\sin \theta + \frac{{\sin 2\theta }}{{\text{n}}}} \right)$$

D

$${\omega ^2}{\text{r}}\left( {\cos\theta + \frac{{\cos2\theta }}{{\text{n}}}} \right)$$

The number of centers in a crank driven slider crank mechanism is

A

0

B

2

C

4

D

6

The following is the inversion of slider crank chain mechanism

A

whitworth quick return mechanism

B

hand pump

C

oscillating cylinder engine

D

all of the mentioned

Any point on a link connecting double slider crank chain will trace a

A

straight line

B

circle

C

ellipse

D

parabola

In a single slider crank chain

A

each of the four pairs is a turning pair

B

one is a turning pair and three are sliding pairs

C

two are turning pairs and two are sliding pairs

D

three are turning pairs and one is a sliding pair

Which of the following is an inversion of a single slider crank chain?

A

Pendulum pump

B

Oscillating cylinder engine

C

Rotary internal combustion engine

D

All of the mentioned

Which of the following is an inversion of a double slider crank chain?

A

Oldham’s coupling

B

Elliptical trammel

C

Scotch yoke mechanism

D

All of the mentioned

The whitworth quick return motion mechanism is formed in a slider crank chain when the

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