1.Solder
is a- Tin
and Lead based alloy
2.
Shaping machine – Quick return mechanism
3.
Heat transfer takes place due to- Second law of Thermodynamics
4.
Barometer shows- Atmospheric pressure
5.
Surface tension is due to- Cohesion only
6.
Capillary action is due to- Adhesion and Cohesion Both
7.
Density of air- 1.24 Kg/m3
8.
Condition for equilibrium for Floating body- Metacentre should be above centre of
gravity
9.
Condition for equilibrium for Submerged body- Centre of Buoyancy should be above centre
of gravity
10.
Angle of Divergence to avoid flow separation- Should be not greater than 7˚
11.
Assumption for Bernoulli’s Equation- Flow is steady, Continuous, non-viscous and
Irrotational
12.
Air and Gas Velocities are measured by– Hot wire Anemometer
13.
Vorticity is Zero- For Irrotational flow
14.
Velocity Potential function exists only for- Irrotational flow
15.
Equipotential lines and constant stream function lines are- Orthogonal
16.
Capillary tube Viscometer- Hagen Poiseuille Equation
17.
Orifice meter is used to measure- Discharge(Cd- 0.64 - 0.76)
18.
A Large metacentric height in a vessel- Makes the periodic time of
Oscillation shorter
19.
Continuity Equation for Incompressible fluid- A1V1- A2V2
20.
Ideal Fluid- Zero Viscosity Zero Shear stress
21.
Coaxial cylinder viscometer- Newton’s Law of Viscosity
22.starting
friction is low in hydrostatic friction
23.spherically
roller bearing are normally used to compensate for angular misalignment
24.for
ductile material use maximum shear stress theory
25.hartnell
governor is spring controlled governor
26.crank
and slotter return motion mechanism –invesion of single slider crank mechanism
Example: shaping machine
27.arc
blow is more common in DC welding with bare electrodes
28.In
the rolling process, rolls separating force can be decreased by reducing the roll diameter
29.In
EDM process if thermal conductivity is high then MRR(material removal rate)and tool
wear is high
30.carburizing
flame is used in the welding of medium carbon steel and nickel etc…
31.In
an irreversible process,there is no loss of heat
32.Head
loss in turbulent flow in a pipe varies a (velocity)2
33.
gears used to connect non-parallel and non-intersecting shafts- spiral gears.
34.biot
number is the ratio of internal conduction resistance to the external convection
resistance.
35.wet
vapour is a combination of saturated vapour and saturated liquid.
36.In
a vapour compresssion system,the condition of refrigenant before entering the
expansion throttle valve is high pressure saturated liquid
37.effect
of sensible heating – decreases in relative humidity.
38.Gibbs
function is G=H-TS
39.maximum
fluctation of energy in a flywheel is = IW2CS
40.In
venturimeter – angle of converging > angle of diverging.
41.pipe
in parallel – Head loss is same.
Pipe in series – discharge is
same.
42. charpy test – Toughness
Knoop test – micro hardness
Cupping test – Formability
Spiral test – fluidity
43.Hydrometer
–
specific gravity of liquid
Barometer
– local
atmospheric pressure
Curtis – velocity
compounding
Rateau – pressure compounding
Kaplan – axial flow
turbine
Francis – mixed flow turbine
44.
for laminar flow in a
pipe, V is equal to 0.5Umax
45.surge
wave is an example of unsteady non-uniform
flow
46.Whirling
speed of a shaft coincide with the natural ferquency of the Transverse vibration.
47.The
amplitude of under damping a small damping varies with time as exponentially
48.Rankine`s
theory of failure is applicable for brittle materials.
49.In
EDM – kerosene
ECM – salt solution
EBM – vacuum
50.
die casting – carburretor body
Drop forging – connecting rod
Centrifugal casting
– hollow
pipes
Investment casting
– turbine
blades
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