Question Set 176

 

1. 

The sleeve or muff coupling is designed as a

A.

dun cylinder

B.

thick cylinder

C.

solid shaft

D.

hollow shaft

Answer: Option D

Explanation:

No answer description available for this question

 

2. 

A sliding bearing in which the working surfaces are completely separated from each other by lubricant is called zero film bearing.

A.

True

B.

False

Answer: Option B

Explanation:

No answer description available for this question

 

3. 

Screws used for power transmission should have

A.

Low efficiency

B.

high efficiency

C.

very fine threads

D.

strong teeth

Answer: Option B

Explanation:

No answer description available for this question. 

 

4. 

The number of rivets in shear shall be equal to the number of rivets in crushing.

A.

Correct

B.

Incorrect

Answer: Option A

Explanation:

No answer description available for this question. 

 

5. 

When bevel gears connect two shafts whose axes intersect at an angle greater than a right angle and one of the bevel gears has a pitch angle of 90°, then they are known as

A.

angular bevel gears

B.

crown bevel gears

C.

internal bevel gears

D.

mitre gears

Answer: Option B

Explanation:

No answer description available for this question.

 

6. 

The toughness of a material __________ when it is heated.

A.

increases

B.

decreases

C.

does not change

Answer: Option B

Explanation:

No answer description available for this question. 

 

7. 

The number of slots in a 25 mm castle nut is

A.

2

B.

4

C.

6

D.

8

Answer: Option C

Explanation:

No answer description available for this question. 

 

8. 

A screw is said to be over hauling screw, if its efficiency is

A.

less than 50%

B.

more than 50%

C.

equal to 50%

D.

none of these

Answer: Option B

Explanation:

No answer description available for this question. 

 

9. 

The application of third type levers is found in

A.

handle of a hand pump

B.

hand wheel of a punching press

C.

lever of a loaded safety valve

D.

a pair of tongs

Answer: Option D

Explanation:

No answer description available for this question. 

 

10. 

For unequal width of butt straps, the thickness of butt straps are

A.

0.75 t for wide strap on the inside and 0.625 t for narrow strap on the outside

B.

0.75 t for narrow strap on the inside and 0.625 t for wide strap on the outside

C.

0.75 t for both the straps on the inside and outside

D.

0.625 t for both the straps on the inside and outside

Answer: Option A

Explanation:

No answer description available for this question.