Which failure theory is more economical for ductile materials?
Anonymous Quiz
21%
Tresca theory
34%
Maximum strain Energy theory
45%
Von Mises Theory
In centrifugal pumps, the chance of cavitation is mostly at
Anonymous Quiz
30%
At the starting of suction pipe
15%
At the delivery end of delivery pipe
55%
At the suction pipe just before impellor.
Fastest method of case hardening is
Anonymous Quiz
12%
Gas Cyaniding
30%
Nitriding
31%
Flame Hardening
27%
Induction Hardening
Spherodising is recommended for
Anonymous Quiz
28%
Low carbon steel
49%
High carbon steel
22%
Cast Iron
For a polytropic process, the value of its index should be
Anonymous Quiz
63%
Positive
9%
Negative
28%
Can be both positive and negative.
For a given heat input ehich process will give maximum work for an Ideal Gas
Anonymous Quiz
30%
Isobaric
4%
Isochoric
48%
Isothermal
19%
Adiabatic
Since rubber is very elastic and very easily expandable so it is
Anonymous Quiz
65%
Ductile material
35%
Brittle material.
Fundamentals of Mechanical Engineering ❤️
Since rubber is very elastic and very easily expandable so it is
Ductility of a material is defined as as the amount of plastic deformation of a material. It has nothing to do with elastic deformation within elastic limit.
If Plastic deformation is more than 5% then that material is considered as ductile material or else brittle material.
So rubber has plastic deformation less than 5% so it is Brittle material.
If Plastic deformation is more than 5% then that material is considered as ductile material or else brittle material.
So rubber has plastic deformation less than 5% so it is Brittle material.
Fundamentals of Mechanical Engineering ❤️
For a given heat input ehich process will give maximum work for an Ideal Gas
In this quiz poll people who will approach with graph will mark Isobaric, but in the question it says for a given heat amount.
Hence by using 1st law Isothermal will be the answer.
Hence by using 1st law Isothermal will be the answer.
For using equation of enthalpy what are the conditions (H= U + PV)
Anonymous Quiz
19%
Can only be applied to open system.
20%
Can only be applied to closed system
21%
Only for Reversible Process
5%
Only for Irreversible Process
35%
No such conditions required.
Fundamentals of Mechanical Engineering ❤️
For using equation of enthalpy what are the conditions (H= U + PV)
Yes, H =U + PV
Since in Thermodynamics U and PV terms were coming very frequently so people decided to frame this a new term known as Enthalpy.
Hence no such assumptions required to apply this equation.
Since in Thermodynamics U and PV terms were coming very frequently so people decided to frame this a new term known as Enthalpy.
Hence no such assumptions required to apply this equation.
According to definition of Thermodynamic work if work is done on the system then
Anonymous Quiz
31%
Weights should be raised
34%
Weights should be lowered
35%
Weights should be in equilibrium with the system.
State of stress of a 2d element under pure shear stress will have Volumetric strain
Anonymous Quiz
45%
Positive
19%
Negative
36%
Zero
Moisture absorbing capacity of which is more
Anonymous Quiz
51%
Less Realtive Humidity
34%
More relative Humidity
15%
Relative Humidity=1
Fundamentals of Mechanical Engineering ❤️
State of stress of a 2d element under pure shear stress will have Volumetric strain
Shear Stress only distorts the body there is no change in volume.
In the stress strain graph of Mild Steel after lower yield point there is a plane region where volume can be assumed to be constant due to shear deformatiin of planes.
In the stress strain graph of Mild Steel after lower yield point there is a plane region where volume can be assumed to be constant due to shear deformatiin of planes.