Basic Mechanical Engineering Test - Set 6

1)   In which power transmitting drive polygon effect is observed?

a. Belt drive
b. Chain drive
c. Both a. and b.
d. None of the above
Answer  Explanation 

ANSWER: Chain drive

Explanation:
No explanation is available for this question!


2)   What is meant by gear ratio?

a. The ratio of pinion speed and gear speed
b. The ratio of number of teeth on pinion and number of teeth on gear
c. Both a. and b.
d. None of the above
Answer  Explanation 

ANSWER: The ratio of pinion speed and gear speed

Explanation:
No explanation is available for this question!


3)   Which gears are used to connect two intersecting shaft axes?

a. Crossed helical gear
b. Worm and worm wheel
c. Bevel gears
d. All of the above
Answer  Explanation 

ANSWER: Bevel gears

Explanation:
No explanation is available for this question!


4)   In stress-strain diagram, up to proportional limit ______

a. stress is inversely proportional to strain
b. force is directly proportional to displacement
c. stress is directly proportional to strain
d. strain is directly proportional to stress
Answer  Explanation 

ANSWER: stress is directly proportional to strain

Explanation:
No explanation is available for this question!


5)   Deformation per unit length is called as ________

a. strain
b. stress
c. modulus of elasticity
d. none of the above
Answer  Explanation 

ANSWER: strain

Explanation:
No explanation is available for this question!


6)   Which of the following materials do not have a well defined yield point?

a. Heat treated steel
b. Concrete
c. Carbon fiber
d. All of the above
Answer  Explanation 

ANSWER: All of the above

Explanation:
No explanation is available for this question!


7)   Factor of safety is the ratio of _________

a. working stress and ultimate strength
b. yield strength and endurance strength
c. ultimate strength and yield strength
d. yield strength and working stress
Answer  Explanation 

ANSWER: yield strength and working stress

Explanation:
No explanation is available for this question!


8)   Which of the following statements is/are true for alloy steels?

a. They contain carbon more than 1.7%
b. They are ductile
c. They have low resilience and toughness
d. All of the above
Answer  Explanation 

ANSWER: They are ductile

Explanation:
No explanation is available for this question!


9)   Which of the following is a ferrous alloy?

a. Brass
b. Aluminum alloys
c. Cast steel
d. All of the above
Answer  Explanation 

ANSWER: Cast steel

Explanation:
No explanation is available for this question!


10)   Copper when alloyed with zinc is known as

a. Brass
b. Bronze
c. Babbits
d. All of the above
Answer  Explanation 

ANSWER: Brass

Explanation:
No explanation is available for this question!