Question Set 4

Question No. 1

What is the amount of carbon present in Cast Iron?


Carbon is basically present in the form of cementite in cast iron. Its percentage lies in the range of 2.03-6.67% by weight of cementite for Cast Iron. If the amount is less than the above range than it is stainless steel

Question No. 2

What are the loads considered when designing the Nut and Bolts?


Shear Loads & crushing loads

Question No. 3

What is the difference between a Fence and a Wall?


A fence is either more temporary or constructed from materials, other than concrete, stone or brick.

Question No. 4

What is the Difference between Quantitative and Qualitative Research?


Quantitative research involves gathering data that is absolute, such as numerical data, so that it can be examined in as unbiased a manner as possible.

Qualitative research may yield stories, or pictures, or descriptions of feelings and emotions. The interpretations given by research subjects are given weight in qualitative research, so there is no seeking to limit their bias. At the same time, researchers tend to become more emotionally attached to qualitative research, and so their own bias may also play heavily into the results.

Question No. 5

What is Bending moment?


When a moment is applied to bend an element, a bending moment exists in the element.

Question No. 6

What are the points in the Stress Strain curve for Steel?


Proportional limit, elastic limit or yield point, ultimate stress and stress at failure.

Question No. 7

Define Reynolds number.


Reynolds number is the ratio of inertial force and viscous force. It is a dimensionless number. It determines the type of fluid flow.

Question No. 8

How many Joules is 1 BTU? What is PS?


1 BTU is equal to 1055.056 joules.

PS is Pferdestarke, the German unit for Horsepower.

Question No. 9

Explain the nomenclature of a 6203-ZZ bearing.


6 is the type code, which shows it is a single-row ball bearing, 2 is the series, means light, 03 is the bore, which is 17 mm and ZZ is the suffix meaning double shielded bearing.

Question No. 10

What is Gear ratio?

Answer: It is the ratio of the number of revolutions of the pinion gear to one revolution of the idler gear.

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