Flank wear occurs mainly on the

Flank wear depends upon the

A

hardness of the work and tool material at the operating temperature

B

amount and distribution of hard constituents in the work material

C

degree of strain hardening in the chip

D

none of the mentioned

Crater wear occurs mainly on the

A

nose part, front relief face and side relief face of the cutting tool

B

face of the cutting tool at a short distance from the cutting edge only

C

cutting edge only

D

front face only

In a certain class 40% of the students are girls, and 20% of the girls wear glasses. What percent of students in the class are girls who wear glasses.

A

6%

B

8%

C

20%

At a symposium, 20% of the professors are psychologists , 60% are biologists and the remaining 12 professors are economist. If 20 of the professors wear glasses, what percent of the professors do not wear glasses?

A

20%

B

331/3%

C

50%

D

66.2/3%

Opponents of laws that require automobile drivers and passengers to wear seat belts argue that in a free society people have the right to take risks as long as the people do not harm the others as a result of taking risks.As a result,they conclude that it should be each person's decision whether or not to wear a seat belt. Which of the following, if true,most seriously weakens the conclusion drawn above ?

A

Many new cars are built with seat belts that automatically fasten when someone sits in the font seat.

B

Automobile insurance rates for all automobile owners are higher because of the need to pay for the increased injuries or deaths of people not wearing seat belts.

C

Passengers in airplanes are required to wear seat belts during takeoffs and landings.

D

The rate of automobile fatalities in districts that do not have mandatory seat-belt laws is greater than the rate of fatalities in districts that do have such laws.

The students wear blue uniform. Here the word 'wear" can be replaced by.

A

bear with

B

put on

C

put up

D

put off

The acceleration of a flat-faced follower when it has contact with the flank of a circular arc cam, is given by

A

$${\omega ^2}{\text{R}}\cos \theta $$

B

$${\omega ^2}\left( {{\text{R}} - {{\text{r}}_1}} \right)\cos \theta $$

C

$${\omega ^2}\left( {{\text{R}} - {{\text{r}}_1}} \right)\sin \theta $$

D

$${\omega ^2}{{\text{r}}_1}\sin \theta $$

The velocity of a flat-faced follower when it has contact with the flank of a circular arc cam, is given by

A

$$\omega {\text{R}}\cos \theta $$

B

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

C

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

D

$$\omega {{\text{r}}_1}\sin \theta $$

The flank of the tooth is the

A

Surface of the top of the tooth

B

Surface of the tooth above the pitch surface

C

Width of the tooth measured along the pitch circle

D

Surface of the tooth below the pitch surface

The angle between the face and flank of the single point cutting tool is known as

A

Rake angle

B

Clearance angle

C

Lip angle

D

Point angle

Flank wear occurs mainly on the

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