For wear strength we always make safe Pinion because more contact is of pinion rather than gear becuase pinion is of smaller size.
In checking beam strength we check by product of bending stress and tooth factor.
But to find wear strength we just directly design for pinion.
#FUNDA #Interview
In checking beam strength we check by product of bending stress and tooth factor.
But to find wear strength we just directly design for pinion.
#FUNDA #Interview
If same amount of heat is added at constant pressure work obtained will be maximum in
Assumptions(closed system, reversible process )
Assumptions(closed system, reversible process )
Anonymous Poll
73%
1 Monoatomic gas
20%
2 Diatomic gas
7%
3 Triatomic gad
In an Ideal Brayton cycle which type of gas will produce maximum efficiency for the same Pressure ratio
Anonymous Poll
68%
1 Monoatomic gas
13%
2 Diatomic gas
19%
3 Tiaatomic gas
The answer to both the polls is
1 Monoatomic gas
It is a lighter gas so it will show more movement and will tranfer more momentum to the piston than a diatomic or triatomic gas.
In Brayton cycle also compressor will require less power to compress a lighter gas which is monoatomic than dia or triatomic gas.
It can be found out from the formulae aslo
Efficiency =1-[1/(r^(1—1/¥))]
As gamma increases efficiency increases. Either by formula or by logic answer will be same.
1 Monoatomic gas
It is a lighter gas so it will show more movement and will tranfer more momentum to the piston than a diatomic or triatomic gas.
In Brayton cycle also compressor will require less power to compress a lighter gas which is monoatomic than dia or triatomic gas.
It can be found out from the formulae aslo
Efficiency =1-[1/(r^(1—1/¥))]
As gamma increases efficiency increases. Either by formula or by logic answer will be same.
19680013054(1).pdf
1.1 MB
Emailing 19680013054(1).pdf
NASA paper on type of working fluid
For more details refer it👆
For more details refer it👆
Which of the turbines are more popular and extensively used and used for higher power generation
Anonymous Poll
63%
1 Inward flow
37%
2 Outward flow
Fundamentals of Mechanical Engineering ❤️
Which of the turbines are more popular and extensively used and used for higher power generation
The answer to the above poll is
1 Inward flow- Inward flow turbines are mostly used because discharge is constant and load variation is easy.
And we know that rate of change of angular momentum gives Torque applied.So more power will be generated in the inward flow because Torque=mvr1-mvr2
R1>R2
That is why outward flow turbines have very less practical usage.
1 Inward flow- Inward flow turbines are mostly used because discharge is constant and load variation is easy.
And we know that rate of change of angular momentum gives Torque applied.So more power will be generated in the inward flow because Torque=mvr1-mvr2
R1>R2
That is why outward flow turbines have very less practical usage.
In Psychometry chart Specific Humidity is plot on y axis and dry bulb temperature is plot on x axis. Specific humidity is a function of vapour pressure. So as we know as temperature increases vapour pressure increases whivh can be seen in Psychometric chart.
Specific humidity is calculated at a particular location and is the ratio of mass of vapour per kg of dry air.
Relative Humidity is indication of capacity of air to accomodate maximum vapor.
It is the ratio of Vapor pressure to saturated vapour pressure.
#FUNDA #RAC
Specific humidity is calculated at a particular location and is the ratio of mass of vapour per kg of dry air.
Relative Humidity is indication of capacity of air to accomodate maximum vapor.
It is the ratio of Vapor pressure to saturated vapour pressure.
#FUNDA #RAC
India Admits Its Moon Lander Crashed, Cites Problem with Braking Thrusters | Space
https://www.space.com/india-admits-moon-lander-crash.html?fbclid=IwAR3_QRvnrJXJ-XBObQo4kb4--CkmqSNr36nMZjQVfHFFYrBCozfQhHsVboM
https://www.space.com/india-admits-moon-lander-crash.html?fbclid=IwAR3_QRvnrJXJ-XBObQo4kb4--CkmqSNr36nMZjQVfHFFYrBCozfQhHsVboM
Space.com
India Admits Its Moon Lander Crashed, Cites Problem with Braking Thrusters
The Indian government has formally acknowledged a crash.
As latent heat of vaporisation of a liquid decreases, boiling point will
Anonymous Poll
55%
1 Increase
28%
2 Decrease
17%
3 Remains same
Fundamentals of Mechanical Engineering ❤️
As latent heat of vaporisation of a liquid decreases, boiling point will
The answer to the above poll is
1 Increases- As we increse temperature latent heat decreases and Pressure increases.(Can be seen from narrowing of dome in a TS diagram)
Boiling point is directly proportional to pressure.
1 Increases- As we increse temperature latent heat decreases and Pressure increases.(Can be seen from narrowing of dome in a TS diagram)
Boiling point is directly proportional to pressure.
On increasing %C , Young's Modulus will
Anonymous Poll
28%
1 Increase
33%
2 Decrease
39%
3 Remains same
Fundamentals of Mechanical Engineering ❤️
On increasing %C , Young's Modulus will
The answer to the above poll is
3 Reamains same - Upto elastic limit it if we increase or decrease carbon content there is no change in slope of stress strain diagram i.e Young's modulus.
3 Reamains same - Upto elastic limit it if we increase or decrease carbon content there is no change in slope of stress strain diagram i.e Young's modulus.
What will be the entropy of universe when a bar is stretched within elastic limit? (Assuming there is no heat transfer to the surrounding)
Anonymous Poll
62%
1 >0
13%
2 <0
25%
3 0
Fundamentals of Mechanical Engineering ❤️
What will be the entropy of universe when a bar is stretched within elastic limit? (Assuming there is no heat transfer to the surrounding)
The answer to this poll is
3 0
As we know dS=DQ/T + del(generation).
Since heat transfer to the surrounding is 0,so it depends on del(generation). And when a material is stretched within elastic limit it can be treated as reversible process, because if we remove the load it will again take its original shape.
3 0
As we know dS=DQ/T + del(generation).
Since heat transfer to the surrounding is 0,so it depends on del(generation). And when a material is stretched within elastic limit it can be treated as reversible process, because if we remove the load it will again take its original shape.
For a 2D point to have translational motion, the Homogeneous Transformation matrix will be of order
Anonymous Poll
13%
1) 1*1
56%
2) 2*2
31%
3) 3*3
Fundamentals of Mechanical Engineering ❤️
For a 2D point to have translational motion, the Homogeneous Transformation matrix will be of order
The answer to this poll is
3 3*3- HTM is 1 degree higher than the given dimensional point.
3 3*3- HTM is 1 degree higher than the given dimensional point.
Can we apply Energy conversation when the cylinder rolls from one postion to another.
As we know for pure rolling of a material, it cannot roll when friction is absent.
As we know for pure rolling of a material, it cannot roll when friction is absent.
Anonymous Poll
66%
1 Yes
31%
2 No
3%
3 Maybe