When seen from the stern of a ship the rotor rotating in anti clockwise direction when the ship pitches up the gyroscopic effect will be
Anonymous Poll
19%
1 Pitches up
31%
2 Starboard side
45%
3 Port sude
5%
4 Pitches down
Fundamentals of Mechanical Engineering ❤️
Which will have more power loss
The answer to this poll is
3 Equal in both
Friction depends upon normal reaction so for eg having 5 collars, bearing 100N load so each collar will bear 20N so the net sum of friction will be equal in both hence power loss will be equal in both.
But single collar bearing will wear out faster than multicollar bearing.
3 Equal in both
Friction depends upon normal reaction so for eg having 5 collars, bearing 100N load so each collar will bear 20N so the net sum of friction will be equal in both hence power loss will be equal in both.
But single collar bearing will wear out faster than multicollar bearing.
If load applied is not given can power loss through Journal bearing can be found out
Anonymous Poll
58%
1 Yes
42%
2 No
Fundamentals of Mechanical Engineering ❤️
If load applied is not given can power loss through Journal bearing can be found out
The answer to this poll is
1 Yes
Power loss is given by Coefficient of friction *V*load
Coefficient of friction when calculated by Petroff's has load in denominator which gets cancelled so power loss is independent of load.
1 Yes
Power loss is given by Coefficient of friction *V*load
Coefficient of friction when calculated by Petroff's has load in denominator which gets cancelled so power loss is independent of load.
If the length of links are 2,5,4,3 then by fixing smallest link we will get
Anonymous Poll
16%
1 Crank Rocker
63%
2 Double Crank
13%
3 Double Rocker
7%
4 No mechanism due to voilation of Grashoff's law
Fundamentals of Mechanical Engineering ❤️
If the length of links are 2,5,4,3 then by fixing smallest link we will get
The answer to this poll is
Double Crank Mechanism
Because if shortest link is fixed then link adjacent to it rotates completely.
Double Crank Mechanism
Because if shortest link is fixed then link adjacent to it rotates completely.
To make a goal the player should kick
Anonymous Poll
36%
1 Left side of centre of mass
37%
2 Right side of centre of mass
27%
3 At centre
Fundamentals of Mechanical Engineering ❤️
To make a goal the player should kick
The answer to this poll is
2 Right side of centre of mass-
The laminar boindary layer will form on the left side of the ball as the direction of spin of the ball will help it.
And after that, turbulent layer will form after transition.
As we know laminar region will have more pressure than turbulent region so according to third law the ball will give reaction equal and opposite and thus follows the trajectory shown in the above image
2 Right side of centre of mass-
The laminar boindary layer will form on the left side of the ball as the direction of spin of the ball will help it.
And after that, turbulent layer will form after transition.
As we know laminar region will have more pressure than turbulent region so according to third law the ball will give reaction equal and opposite and thus follows the trajectory shown in the above image
Fundamentals of Mechanical Engineering ❤️
Specific heat of refrigerant in gaseous phase should be
The answer to this poll is
2 High
If specific heat at constant pressure is high the we need less tempearture i.e less compressor work is required to attain the state before inlet to the condenser.
2 High
If specific heat at constant pressure is high the we need less tempearture i.e less compressor work is required to attain the state before inlet to the condenser.
Fundamentals of Mechanical Engineering ❤️
Specific heat of refrigerant in liquid state should be
The answer to this poll is
2 Low
To have less entropy, specific heat at constant pressure should be less such that more heat transfer is possible in the evaporator.
2 Low
To have less entropy, specific heat at constant pressure should be less such that more heat transfer is possible in the evaporator.
In lewis beam strength there is an assuption that the beam is of uniform strength.
This assumption is bit practical as we can make a beam of equal strenght either by varying its width linearly or by varying its depth parabollicaly.
Gear tooths when seen as a Cantilever joint we can observe that depth increases as we move from free end towards the fixed end of the tooth.
#FUNDA #Interview
This assumption is bit practical as we can make a beam of equal strenght either by varying its width linearly or by varying its depth parabollicaly.
Gear tooths when seen as a Cantilever joint we can observe that depth increases as we move from free end towards the fixed end of the tooth.
#FUNDA #Interview
When car is taking a turn for pure rolling condition the I centres of all the 4 tyres should pass through
Anonymous Poll
20%
1 Axis of Front tyres
50%
2 Axis of Back tyres
30%
3 They never intersect
The answer to the above poll is
2 Axis of back tyres
While taking a turn be it left or right back wheels do not change their orientation & steering is connected to front wheels.
By the concept of I centres we know that at a instant I centre is perpendicular to the direction of velocity.
So, the axis of front tyres must intersect to the axis of back tyres because I centres of both the back tyres will coincide with the axis of back tyres.
And to satisfy pure rolling all the I centres of all the 4 tyres should intersect at a common point.
2 Axis of back tyres
While taking a turn be it left or right back wheels do not change their orientation & steering is connected to front wheels.
By the concept of I centres we know that at a instant I centre is perpendicular to the direction of velocity.
So, the axis of front tyres must intersect to the axis of back tyres because I centres of both the back tyres will coincide with the axis of back tyres.
And to satisfy pure rolling all the I centres of all the 4 tyres should intersect at a common point.
In which method there is chance of contact ratio in gears to be less than 1
Anonymous Poll
60%
1 Stubbing
21%
2 Increase number of teeth
19%
2 Undercutting