ISRO Technical Assistant Mechanical Question Paper - 2016 with Answer Key

ISRO Technical Assistant Mechanical Question Paper - 2016 with Answer Key

31) A rectangular bar with a circular hole is to be made of a material with actual maximum permissible stress of 150 Mpa. If stress concentration factor for the configuration is 3.0, what is the nominal average stress for sizing the section?

Answer is:

50 Mpa

32) TIG welding is preferred for

Answer is:

Aluminum

33) Which engine requires forward motion through air to produce thrust

Answer is:

Ramjet

34) Which of the following is essential for boiler operation?

Answer is:

Safety valve

35) A nozzle is said to be chocked when

Answer is:

It's flow is maximum

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