Test: Heat Treatment of Metals & Elastomer - 1 - Mechanical Engineering MCQ

Which one of the following is true? 

Match List I with List II and select the correct answer: 

On completion of heat treatment, the resulting structure will have retainedAustenite if 

Which of the following fibre materials are used for reinforcement in compositematerials? 
1. Glass
2. Boron carbide
3. Graphite
Select the correct answer using the codes given below:

During heat treatment of steel, the hardness of various structures in increasing order are 

Consider the following statements:
The strength of the fibre reinforced plastic product
1. Depends upon the strength of the fibre alone
2. Depends upon the fibre and plastic
3. Is isotropic
4. Is anisotropic
Which of these statements are correct?

Carburized machine components have high endurance limit becausecarburization 

Wood is a natural composite consisting of which of the following?  

TTT diagram indicates time and temperature transformation of  

Which one of the following materials is not a composite? 

The iron-carbon diagram and the TTT curves are determined under 

Nano composite materials are highly preferable in design consideration for their   

Consider the following treatments: 
1. Normalizing
2. Hardening
3. Martempering
4. Cold working

Hardness and tensile strength in austenitic stainless steel can be increased by

Which of the following composites are 'dispersion-strengthened composites’?

Quenching in not necessary when hardening is done by  

Two plain carbon steel specimens having 0·8% carbon content are welded. If weobserve the weldment under Metallurgical Microscope from centre towards eitherside, the following structures are observed at different zones: 
1. Fine Pearlite
2. Coarse Pearlite
3. Martensite
Select the correct sequence using the codes given below:
Codes:

If the surface of a component is heavily stressed while the stresses in the core areof comparative small magnitude, which one of the following heat treatment methods is employed?