‘Cryogenics’ is concerned with the generation & use of low temperature in the range of____________________?

Related Mcqs:

With increase in compression ratio, the volumetric efficiency of air compressor____________________?

A. Increases B. Decreases C. Remain same D. May increase or decrease (depends on the suction pressure)...

Hydrogen in liquid steels is dissolved_________________?

A. As tiny gas bubbles B. In the atomic form C. In the ionic form D. In the molecular form...

Which of the following is not an ore of copper ?

A. Cryolite B. Azurite C. Chalcopyrite D. Malachite...

Case hardening of a material is__________________?

A. Followed by tempering or carburising B. Preceded by its tempering C. Done to get a soft ductile interior with a very hard surface D. Carried out to get extreme hardness in its core...

Use of flux during soldering is done to__________________?

A. Increase fluidity of solder by lowering its melting temperature B. Prevent oxide formation C. Wash away surplus solder D. Full up the joint gap...