Scavenging air in diesel engine means________?

Silver-based solder is used for________?

If the compression ratio of an engine working on Otto cycle is increased from 5 to 7, the %age increase in efficiency will be________?

During a tensile test on a specimen of 1 cm cross-section, maximum load observed was 8 tonnes and area of cross-section at neck was 0.5 cm2. Ultimate tensile strength of specimen is________?

Lancing is the operation of ________?

In gas turbines^ high thermal efficiency is obtained in________?