FM CH 1 Flashcards by Unknown Unknown

Q

Saturation Vapour Pressure if func of

A

temp and type of liq

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Q

cavitation occurs

A

actual pressure> saturation pressure

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Q

cavitation increase

A

temp increase
pressrure dec
elevation inc
velocity inc

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Q

k?

A

change in pressure/volumetric strain
(bulk modulus)

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Q

k formula

A

density*(d(PRESSURE)/d(density))

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Q

isothermal k

A

= pressure

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Q

adiabatic k

A

= pressure*adiabatic constant

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Q

dynamic viscosity

A

pa sec
Ns/m sq

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Q

torque formula `

A

(pidynamic viscositywR power 4)/2thickness

w in rad/sec

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Q

w =?

A

2piN/60

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Q

relation bet dyn vis of water and air

A

water=55*air

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Q

dialatant

A

sugar sol in water

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Q

bingham

A

toothpaste
seewage sludge

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Q

psuedoplastic

A

paint ,blood

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Q

rheopectic

A

gypsum paste

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Q

thixotropic

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A

printer ink,ketchup

Q

newtonian

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A

air,water

Q

power

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A

touvelocityarea
torque(T)*w

Q

T..TORQUE

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A

FORCE*RADIAL DISTANCE

Q

surface tension

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A

due to cohesion

Q

temp increases

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A

surface Tension decreases as cohesion decreases

Q

addition of detergent

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A

reduces ST

Q

ST FORMULA

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A

increase in surface energy/increase in surface area

force/lenght

Q

pressure inside droplet

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A

p=4*ST/dia

liquid jet

p=2*ST/dia

capillarity occurs due to

ST Adhesion

soap bubble

p= 8*ST/dia

force applied to stop movable water

ST=force/2*b

where pressure is high

concave side

capillarity rise

h=(4*ST*cos(theta))/sp wt*dia

h in ll plate

h=2*ST*cos()/(st wt* thickness)

h in annular space

h=4*ST*cos)/(do-di)*gamma