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WorksheetsDaily live event : 25 / 06/ 2020
Total questions: 25
Worksheet time: 14mins
A mechanism that locks the lathe carriage to the lead screw for thread cutting is called :
fly cutter
dog clutch
shim
half nut
The movement of air mass in the case of tornado can be described as
Forced vortex throughout
Free vortex throughout
Forced vortex at the core and free vortex outside
Free vortex at the core and forced vortex outside
If the velocity profile in a pipe flow is parabolic, what will be the shear stress distribution?
Hyperbola
parabola
straight line
ellipse
Creep is the gradual increase of
Plastic strain with time at constant load
Elastic strain with time at constant load
Plastic strain with time at varying load
Elastic strain with time at varying load
The stress level, below which a material has a high probability of not failing under reversal of stress, is known as
Elastic limit
Endurance limit
Proportional limit
Tolerance limit
If forces P1, P2, P3 and P4 of a system are such that the force polygon does not close, then the system will
Be in equilibrium
Reduce to a resultant force
Reduce to a couple
Not be in equilibrium
Out of Aluminium, Cast iron and Steel, which one has the highest Poisson's ratio
Aluminium
Cast Iron
Steel
all have equal Poissons ratio
A composite system where the components are of equal lengths is subjected to temperature rise. Which one of the following stresses will be developed in the component with highest coefficient of thermal expansion?
tensile stress
shear stress
Compressive stress
zero stress
A student unable to answer a question on Newton’s laws of motion attempts to pull himself up by tugging on his hair. He will not succeed-
As the force exerted is small
As the force applied is internal to the system
Newton’s law of inertia is not applicable to living beings
The frictional force while gripping is small
A particle is moving in a circle with uniform speed v. In moving from a point to another diametrically opposite point,
The momentum changes by 2mv
The momentum changes by mv
The kinetic energy changes by ½ mv2
The kinetic energy changes by mv2
king closers are related to
doors and windows
king post truss
bonding between beams
brick masonry
Invar tape is made of an alloy of
copper and steel
brass and nickel
brass and steel
nickel and steel
Disinfection of drinking water is done to remove
odour
bacterias
turbudity
colour
In paints,linseed oil is used as
a solidifier
a driver
a vehicle
a water proofing base
specific yield of an acquifer is
proportional to soil porosity
volume of the water which drains freely
depends on soil conditions
none of these
Dynamic formula to find pile load capacity is best for
fine grained soil
coarse grained soil
loose uniform fine sand
clay
when two column loads are unequal and the outer column carries heavier load, we use
strap footing
mat footing
trapezoidal combined footing
spread footing
An increase in volume of soil without any constraints is known as
swelling
free swell
bulking
capillary action
A footing on ground surface or at shallow depth in very dense sand shows
General shear failure
Punching shear failure
Local shear failure
maximum settlement
For a steep slope profile S1,the type of flow will be
super critical
critical
sub critical
normal
1 micrometer is equals to
.1mm
.01mm
.001mm
.0001mm
Moment of inertia is the
second moment of force
second moment of area
second moment of mass
all of these
If a body is acted upon by number of coplanar non-concurrent forces, it may
Rotate about itself without moving
Move in any one direction rotating about itself
Be completely at rest
All of these
For a self locking machine, the efficiency must be
Equal to 50%
Less than 50%
More than 50%
100%
If the number of pulleys in a system is equal to its velocity ratio, then it is a ___ system of pulleys
first
Second
Third
None of these
