This type of solid is formed by sweeping a shape along a linear path:

3/4th of square were taken to form shape A and the rest was made to form shape B. Shape A was divided into four equal squares (Shape C), what will be the ratio of the one shape C to one shape B.

A

1:4

B

3:16

C

1:2

D

3:4

Close circuit grinding by a ball mill with air sweeping employs a

A

Classifier

B

Cyclone separator between mill & classifier

C

Both A & B

D

Neither A nor B

When the addenda on pinion and wheel is such that the path of approach and path of recess are half of their maximum possible values, then the length of the path of contact is given by (where r = Pitch circle radius of pinion, R = Pitch circle radius of wheel and $$\varphi $$ = Pressure angle)

A

$$\frac{{\left( {{{\text{r}}^2} + {{\text{R}}^2}} \right)\cos \varphi }}{2}$$

B

$$\frac{{\left( {{{\text{r}}^2} + {{\text{R}}^2}} \right)\sin \varphi }}{2}$$

C

$$\frac{{\left( {{\text{r}} + {\text{R}}} \right)\cos \varphi }}{2}$$

D

$$\frac{{\left( {{\text{r}} + {\text{R}}} \right)\sin \varphi }}{2}$$

A thin circular disc is rolling with a uniform linear speed, along a straight path on a plane surface. Which of the following statement is correct in this regard?

A

All points of the disc have the same velocity.

B

The centre of the disc has zero acceleration.

C

The centre of the disc has centrifugal acceleration.

D

The point on the disc making contact with the plane surface has zero acceleration.

The linear velocity of a body rotating at $$\omega $$ rad/s along a circular path of radius r is given by

A

$$\frac{\omega }{{\text{r}}}$$

B

$$\omega {\text{r}}$$

C

$$\frac{{{\omega ^2}}}{{\text{r}}}$$

D

$${\omega ^2}{\text{r}}$$

A rectangular field of 200m by 120m has two roads running along its center, one along the length and the other along the width. If the width of the roads is 5m, what is the area covered by the two roads?

A

1575 sq.m.

B

1600 sq.m.

C

1550 sq.m.

D

400 sq.m.

The path ______ paved, so we were able to walk through the path.

A

was

B

had been

C

has been

D

being

A arden is 60m long and 20m wide. Inside the garden there is a 5m wide path around it . The area of the path is in square meter .

A

700

B

650

C

375

D

500

The path-------paved, so we were able to walk through the path.

A

was

B

had been

C

has been

D

being

Outside a square garden there is a path of 5 metres width around it, If the area of the path is 500 square metres, what is the area of the garden?

A

250

B

300

C

400

D

450

This type of solid is formed by sweeping a shape along a linear path:

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