Cam size depends upon

The size of a cam depends upon

A

base circle

B

pitch circle

C

prime circle

D

pitch curve

The size of cam depends upon

A

Base circle

B

Pitch circle

C

Prime circle

D

Pitch curve

The difference between CAD and CAM is that CAD software is directed at product design while CAM software is:

A

concerned with production and control of tool design

B

concerned with management programs

C

designed for communications

D

specifically for PC-board design

E

None of the above

The velocity of the reciprocating roller follower when it has contact with the straight flanks of the tangent cam, is given by (where $$\omega $$ = Angular velocity of the cam shaft)

A

$$\omega \left( {{{\text{r}}_1}{{\text{r}}_2}} \right)\sin \theta $$

B

$$\omega \left( {{{\text{r}}_1} + {{\text{r}}_2}} \right)\sin \theta \sec 2\theta $$

C

$$\omega \left( {{{\text{r}}_1}{{\text{r}}_2}} \right)\cos \theta $$

D

$$\omega \left( {{{\text{r}}_1} + {{\text{r}}_2}} \right)\cos \theta \,{\text{cosec2}}\theta $$

The period during which the cam follower remains at rest, when cam moves, is known as

A

Constant period

B

Fixed period

C

Dwell period

D

Idle period

The pressure angle of a cam depends upon

A

offset between centre lines of cam and follower

B

lift of follower

C

angle of ascent

D

all of the mentioned

In a circular arc cam with roller follower, the acceleration in any position of the lift will depend only upon

A

Total lift, total angle of lift, minimum radius of cam and cam speed

B

Radius of circular arc, cam speed, location of centre of circular arc and roller diameter

C

Mass of cam follower linkage, spring stiffness and cam speed

D

Total lift, centre of gravity of the cam and cam speed

The size of abrasive grain required in a grinding wheel depends upon the

A

Amount of material to be removed

B

Hardness of material being ground

C

Finish desired

D

All of these

Size of the combustion chamber of a furnace depends upon the

A

Heat release rate of the fuel

B

Preheat temperature of fuel & air

C

Method of mixing the fuel & air

D

All of the above

Crystal size in a continuous crystalliser depends upon the

A

Rate of heat transfer

B

Degree of turbulence

C

Degree of supersaturation

D

All of the above

Cam size depends upon

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