1.  Acryl ate

2.  Silicon varnish

3.  Thermoplastic synthetic resin

4.  Phenol formaldehyde resin

4
Correct Answer :

Phenol formaldehyde resin


Explanation :
No Explanation available for this question

1.  Brass

2.  Phosphor bronze

3.  Invar

4.  Muntz metal

4
Correct Answer :

Invar


Explanation :
No Explanation available for this question

1.  Material which becomes polarized when stressed

2.  A material which changes dimension due to applied field

3.  A material that has properties midway between materials

4.   A material in which magnetic-sing force reduces when current flowing is increased

4
Correct Answer :

Material which becomes polarized when stressed


Explanation :
No Explanation available for this question

1.  Silver

2.  Iron

3.  Magnesium

4.  Aluminum

4
Correct Answer :

Magnesium


Explanation :
No Explanation available for this question

1.  Ferromagnetic

2.  Ferroelectric

3.  Dielectric

4.  Ceramagnetic

4
Correct Answer :

Ferromagnetic


Explanation :
No Explanation available for this question

1.  Brass

2.  Solder

3.  Glass

4.  Polythene

4
Correct Answer :

Glass


Explanation :
No Explanation available for this question

1.  Ferro-magnetic

2.  Ferry-magnetic

3.  Para-magnetic

4.  Anti-magnetic

4
Correct Answer :

Ferry-magnetic


Explanation :
No Explanation available for this question

1.  932

2.  432

3.  423

4.  364

4
Correct Answer :

364


Explanation :
No Explanation available for this question

1.  Formation of marten site, which produces very hard and brittle steel

2.  Retention of austenite, at room temperature, which a very ductile and tough steel

3.  Formation of large carbide particles near the grain boundaries in the steel, which makes the steel brittle very tough

4.  Retention of austenite, even at room temperature, which gives very brittle and hard steel

4
Correct Answer :

Formation of marten site, which produces very hard and brittle steel


Explanation :
No Explanation available for this question

1.  The number density of dislocation in the bar will be reduced, but the shape of the bar remains unchanged

2.  The bar will straighten out again, since dislocations are eliminated by the annealing

3.  The bar will straighten out gain, since the number of dislocation is increased by annealing

4.  Nothing changes on an atomic, micro structural or macroscopic scale in the bar. The bar just gets hot

4
Correct Answer :

The number density of dislocation in the bar will be reduced, but the shape of the bar remains unchanged


Explanation :
No Explanation available for this question

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