ISRO Scientist or Engineer Mechanical 2012

Instructions

For the following questions answer them individually

Question 61

Match the list I with list II and select the correct answer from the codes given in the lists below:

Video Solution
Question 62

A shaft has a dimension $$ \phi 35^{\frac {-0.009} {-0.025}},$$ the respective values of fundamental deviation and tolerance are

Video Solution
Question 63

When a material sustains steady loads for long periods of time, the material may continue to deform until they may tend to fracture under the same load. This phenomenon is known as

Video Solution
Question 64

Which one of the following is a wrong statement?

Video Solution
Question 65

The most popular and standard typeforall purpose tool steels is 18:4:1 High Speed Steel (H.S.S.), which contains.

Video Solution
Question 66

Water is boiled at $$1\times10^5 $$ Pa pressure in a coffee maker equipped with an immersion-type electric_heating-element. The coffee maker initially contains 1 kg of water. Once boiling started, it is observed that half of the water in the coffee maker evaporated in 18 minutes. If the heat loss from the coffee maker is negligible, the power rating of the heating element is

Video Solution
Question 67

An adiabatic heat exchanger is used to heat cold water at $$15^\circ C$$ entering at a rate of 5 kg/s by hotair at $$90^\circ C$$ entering also at rate of 5 kg/s. If the exit temperatureof hot air is $$20^\circ C$$, the exit temperature of cold water is

Video Solution
Question 68

Logmean area ‘A’ can be given as.

Video Solution
Question 69

Nusselt number is the ratio of

Video Solution
Question 70

Zeroth law of thermodynamics is not valid for the following

Video Solution
cracku

Boost your Prep!

Download App