45°
90°
135°
180°
B. 90°
Critical damping ratio
Damping factor
Logarithmic decrement
Magnification factor
Pressure angle
Circular pitch
Diametral pitch
Pitch circle diameter
[c²/(1 + 2c)] (m + M) g.h
[2c²/(1 + 2c)] (m + M) g.h
[3c²/(1 + 2c)] (m + M) g.h
[4c²/(1 + 2c)] (m + M) g.h
Will remain same
Will change
Could change or remain unaltered depending on which link is fixed
Will not occur
Slow speed
Moderate speed
Highs peed
Any one of these
For changing the direction of motion of the belt
For applying tension
For increasing velocity ratio
All of the above
More than
Less than
Same as
None of these
Uniform velocity
Simple harmonic motion
Uniform acceleration and retardation
Cycloidal motion
Machines transmit mechanical work, whereas structures transmit forces
In machines, relative motion exists between its members, whereas same does not exist in case of structures
Machines modify movement and work, whereas structures modify forces
Efficiency of machines as well as structures is below 100%
Inside admission valve
Outside admission valve
Piston slide valve
None of these
Over-damped
Under damped
Critically damped
Without vibrations
T = W.r tan(φ - α)
T = W.r tan(φ + α)
T = W.r tanα
T = W.r tanφ
Point or line contact between the two elements when in motion
Surface contact between the two elements when in motion
Elements of pairs not held together mechanically
Two elements that permit relative motion
The difference between the maximum and minimum energies is called maximum fluctuation of energy
The coefficient of fluctuation of speed is the ratio of maximum fluctuation of speed to the mean speed
The variations of energy above and below the mean resisting torque line is known as fluctuation of energy
None of the above
Broken belt
Broken belt and its adjacent belts
All the belts
There is no need of changing any one as remaining belts can take care of transmission of load
Remain same as before
Become equal to 2R
Become equal to R/2
Become equal to R/4
2π. √[gh/(kG² + h²)]
2π. √[(kG² + h²)/gh]
(1/2π). √[gh/(kG² + h²)]
(1/2π). √[(kG² + h²)/gh]
Piston and cylinder of a reciprocating steam engine
Shaft with collars at both ends fitted into a circular hole
Lead screw of a lathe with nut
Ball and a socket joint
Parallel to each other
Perpendicular to each other
Inclined at 45°
Opposite to each other
0
2
4
6
Each of the four pairs is a turning pair
One is a turning pair and three are sliding pairs
Two are turning pairs and two are sliding pairs
Three are turning pairs and one is a sliding pair
Is same as that of velocity
Is opposite to that of velocity
Could be either same or opposite to velocity
Is perpendicular to that of velocity
Not exist
Exist
Depend on position of crank
None of the above
It is easy to disassemble
It is easy to engage and disengage
It transmits shocks gradually
It prevents shock transmission and eliminates stress reversals
ω² r {(n + 1)/n}
ω² r {(n - 1)/n}
ω² r {n/(n + 1)}
ω² r {n/(n - 1)}
The interference is inherently absent.
The variation in centre distance of shafts increases radial force.
A convex flank is always in contact with concave flank.
The pressure angle is constant throughout the teeth engagement.
Spur gear
Bevel gear
Spiral gear
None of the above
Halved
Doubled
Quadrupled
None of these
0° and 90°
0° and 180°
90° and 180°
180° and 360°
Dedendum
Addendum
Clearance
Working depth