Materials and Construction

Wrought iron is having very high ________________?

Byadmin March 10, 2019August 27, 2021

Wrought iron is having very high ________________?

A. Hardness
B. Strength
C. Corrosion resistance
D. Susceptibility to changes in its properties by heat treatment

Materials and Construction

Purity of electrical grade aluminium should be ≥ _____________ percent?

Purity of electrical grade aluminium should be ≥ _____________ percent?

A. 95
B. 99.5
C. 85
D. 90

Read More Purity of electrical grade aluminium should be ≥ _____________ percent?
Materials and Construction

Tempering of steel is done to make it_________________?

Tempering of steel is done to make it_________________?

A. Brittle
B. Hard
C. Rollable
D. Soft

Read More Tempering of steel is done to make it_________________?
Materials and Construction

An elastic behaviour of materials is expressed in terms of_______________?

An elastic behaviour of materials is expressed in terms of_______________?

A. Hysteresis loop area
B. Stress-strain curve
C. Relaxation time
D. None of these

Read More An elastic behaviour of materials is expressed in terms of_______________?
Materials and Construction

Corrosion resisting properties of cast iron are significantly improved by the addition of 12 – 15% of___________________?

Corrosion resisting properties of cast iron are significantly improved by the addition of 12 – 15% of___________________?

A. Tungsten
B. Vanadium
C. Silicon
D. All A., B. & C.

Read More Corrosion resisting properties of cast iron are significantly improved by the addition of 12 – 15% of___________________?
Materials and Construction

Aluminium alloy is one of the most suitable materials of construction for aircrafts mainly due to its___________________?

Aluminium alloy is one of the most suitable materials of construction for aircrafts mainly due to its___________________?

A. High strength to weight ratio
B. Low temperature strength properties
C. Its ability to be cast, rolled, forged & stamped
D. High strength and corrosion & oxidation-resistance at elevated temperature

Read More Aluminium alloy is one of the most suitable materials of construction for aircrafts mainly due to its___________________?
Materials and Construction

Rubber lined vessels are corroded by the action of__________________?

Rubber lined vessels are corroded by the action of__________________?

A. Aqua regia
B. Chloroform
C. Sulphuric acid (95%)
D. All A., B. and C.

Read More Rubber lined vessels are corroded by the action of__________________?

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