Q.1
The balancing weights are introduced in planes parallel to the plane of rotation of the disturbing mass. To obtain complete dynamic balance, the minimum number of balancing weights to be introduced in different planes is
Q.2
The train value of a gear train is
Q.3
A slider moves at a velocity v on a link revolving at ω rad/s. The coriolis component of acceleration is
Q.4
The frictional torque transmitted in a truncated conical pivot bearing, considering uniform pressure, is
Q.5
In a Hartnell governor, the compression of the spring is __________ the lift of the sleeve.
Q.6
To connect two parallel and coplanar shafts the following type of gearing is used
Q.7
The example of rolling pair is
Q.8
The Coriolis component of acceleration exists whenever a point moves along a path that has
Q.9
The absolute acceleration of any point ‘P’ in a link about center of rotation ‘O’ is
Q.10
In a simple train of wheels, the velocity ratio __________ the intermediate wheels.
Q.11
The power of a Porter governor is equal to
Q.12
According to Kennedy's theorem, if three bodies move relatively to each other, their instantaneous centers will lie on a
Q.13
Which gear is used for connecting two coplanar and intersecting shafts?
Q.14
Idler pulley is used
Q.15
For the brake to be self locking, the force P at C shown in the below figure, should
Theory of Machine mcq question image
Q.16
Sense of tangential acceleration of a link
Q.17
When a point at the end of a link moves with constant angular velocity, its acceleration will have
Q.18
When a point moves along a straight line, its acceleration will have
Q.19
For a kinematic chain to be considered as mechanism
Q.20
In a vibrating system, if the actual damping coefficient is 40 N/m/s and critical damping coefficient is 420 N/m/s, then logarithmic decrement is equal to
Q.21
In under damped vibrating system, if x₁ and x₂ are the successive values of the amplitude on the same side of the mean position, then the logarithmic decrement is equal to
Q.22
The two parallel and coplanar shafts are connected by gears having teeth parallel to the axis of the shaft. This arrangement is known as
Q.23
The type of pair formed by two elements which are so connected that one is constrained to turn or revolve about a fixed axis of another element is known as
Q.24
The velocity of any point in mechanism relative to any other point on the mechanism on velocity polygon is represented by the line
Q.25
The factor which affects the critical speed of a shaft is
Q.26
Klein's construction is useful to determine
Q.27
A rigid body possesses ________degrees of freedom
Q.28
In higher pair, the relative motion is
Q.29
A Hartnell governor is a
Q.30
Which of the following property of the instantaneous center is correct?
Q.31
The periodic time of a compound pendulum is __________ when the distance between the point of suspension and the center of gravity is equal to the radius of gyration of the body about its center of gravity.
Q.32
Pulley in a belt drive acts as
Q.33
Which of the following statement is correct?
Q.34
The pair is known as a higher pair, when the relative motion between the elements of a pair is
Q.35
In order to give a complete secondary balance of a multi-cylinder inline engine,
Q.36
In order to give the primary balance of the reciprocating parts of a multi-cylinder inline engines
Q.37
Which of the following statement is correct?
Q.38
Which of the following statement is correct?
Q.39
Which of the following statement is correct?
Q.40
The Ackerman steering gear mechanism is preferred to the Davis steering gear mechanism, because
Q.41
Maximum fluctuation of energy in a flywheel is equal to [where I = Mass moment of inertia of the flywheel, E = Maximum fluctuation of energy, CS = Coefficient of fluctuation of speed, and ω = Mean angular speed = (ω₁ + ω₂)/2]
Q.42
The gear train usually employed in clocks is a
Q.43
The method of direct and reverse cranks is used in engines for
Q.44
Rectilinear motion of piston is converted into rotary by
Q.45
Which of the following is used to control the speed variations of the engine caused by the fluctuations of the engine turning moment?
Q.46
The displacement of the D-slide valve is __________ the steam lap by a distance known as lead of the valve.
Q.47
In which of the following type of gear train the first gear and the last gear are co-axial.
Q.48
A point on a connecting link (excluding end points) of a double slider crank mechanism traces a
Q.49
The motion between a pair when limited to a definite direction, irrespective of the direction of force applied, is known as
Q.50
The primary unbalanced force is maximum when the angle of inclination of the crank with the line of stroke is
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