Basic Mechanical Engineering Test - Set 7

1)   The plastic materials which do not undergo chemical change when heated are ____

a. Thermoplasts
b. Thermosets
c. Both a. and b.
d. None of the above
Answer  Explanation 

ANSWER: Thermoplasts

Explanation:
No explanation is available for this question!


2)   Which of the following is a characteristic of Polytetra-flouro-ethylene?

a. High coefficient of friction
b. Tough at high temperature
c. Resistance to chemical attack
d. All of the above
Answer  Explanation 

ANSWER: Resistance to chemical attack

Explanation:
No explanation is available for this question!


3)   Which of the following statements is/are true for mechanisms?

a. A slider crank mechanism is formed, if one link in slider crank chain is fixed
b. Three kinematic links joined together forms a mechanism
c. Kinematic chain is a part of kinematic pair
d. All of the above
Answer  Explanation 

ANSWER: A slider crank mechanism is formed, if one link in slider crank chain is fixed

Explanation:
No explanation is available for this question!


4)   Which body transmits force with negligible deformation?

a. Elastic body
b. Resistant body
c. Deforming body
d. All of the above
Answer  Explanation 

ANSWER: Resistant body

Explanation:
No explanation is available for this question!


5)   What is the primary function of mechanism?

a. Power transmission
b. Power absorption
c. Force transmission
d. Motion transmission
Answer  Explanation 

ANSWER: Motion transmission

Explanation:
No explanation is available for this question!


6)   Which of the following is an inversion of four bar chain?

a. Coupled wheels of locomotive
b. Whitworth quick return mechanism
c. Reciprocating air compressor
d. Hand pump
Answer  Explanation 

ANSWER: Coupled wheels of locomotive

Explanation:
No explanation is available for this question!


7)   What are the number of sliding and turning pairs in a slider crank mechanism?

a. 1 sliding pair and 3 turning pairs
b. 2 sliding pairs and 2 turning pairs
c. 3 sliding pairs and 1 turning pair
d. None of the above
Answer  Explanation 

ANSWER: 1 sliding pair and 3 turning pairs

Explanation:
No explanation is available for this question!


8)   What is meant by drag in casting process?

a. Upper part of casting flask
b. Molten metal
c. Lower part of casting flask
d. Upper and lower part of casting flask
Answer  Explanation 

ANSWER: Lower part of casting flask

Explanation:
No explanation is available for this question!


9)   Casting replica used to make the cavity is called as

a. Mould
b. Pattern
c. Cope
d. None of the above
Answer  Explanation 

ANSWER: Pattern

Explanation:
No explanation is available for this question!


10)   The process of joining similar or dissimilar materials by heating them below 450o C using non-ferrous filler material is called as ______

a. Brazing
b. Soldering
c. Welding
d. All of the above
Answer  Explanation 

ANSWER: Soldering

Explanation:
No explanation is available for this question!