Q.1
The secondary unbalanced force is maximum when the angle of inclination of the crank with the line of stroke is
Q.2
In elliptical trammels
Q.3
The distance by which the __________ of the D-slide valve overlaps the steam port is called exhaust lap.
Q.4
In locomotives, the ratio of the connecting rod length to me crank radius is kept very large in order to
Q.5
Transmission of power from the engine to the rear axle of an automobile is by means of
Q.6
The ratio of the driving tensions for V-belts is __________ times that of flat belts.
(Where β = Semi-angle of the groove)
Q.7
In an open pair, the two elements of a pair
Q.8
In a single slider crank chain
Q.9
An imaginary circle which by pure rolling action, gives the same motion as the actual gear, is called
Q.10
The balancing of a rigid rotor can be achieved by appropriately placing balancing masses in
Q.11
A point B on a rigid link AB moves with respect to A with angular velocity ω rad/s. The radial component of the acceleration of B with respect to A, is (where vBA = Linear velocity of B with respect to A)
Q.12
Which one of the following can completely balance several masses revolving in different planes on a shaft?
Q.13
The frictional torque transmitted in a flat collar bearing, considering uniform pressure, is (where r₁ and r₂ = External and internal radii of collar respectively)
Q.14
The power from the engine to the rear axle of an automobile is transmitted by means of
Q.15
Which of the following governor is used to drive a gramophone?
Q.16
The frictional torque transmitted in a flat collar bearing, considering uniform wear, is (where r₁ and r₂ = External and internal radii of collar respectively)
Q.17
The following is the inversion of slider crank chain mechanism
Q.18
The partial balancing means
Q.19
Coriolis component is encountered in
Q.20
When a ship travels in a sea, which of the effect is more dangerous
Q.21
The Klein's diagram is useful to find
Q.22
With single Hooke's joint it is possible to connect two shafts, the axes of which have an angular misalignment up to
Q.23
For two governors A and B, the lift of sleeve of governor A is more than that of governor B, for a given fractional change in speed. It indicates that
Q.24
In a differential band brake as shown in the below figure, the drum rotates anticlockwise and the greater tension T₁ acts at A and smaller tension T₂ at B. Length OA is greater than length OB. In order to apply the brake, the force P at C should
Theory of Machine mcq question image
Q.25
A higher pair has__________.
Q.26
Which of the following is a higher pair?
Q.27
Coriolis component acts
Q.28
In a cone pulley, if the sum of radii of the pulleys on the driving and driven shafts is constant, then
Q.29
TJIE horse power transmitted by a belt is dependent upon
Q.30
Which of the following disciplines provides study of inertia forces arising from the combined effect of the mass and the motion of the parts?
Q.31
In the below figure, PC is the connecting rod and OC is the crank making an angle θ with the line of stroke PO and rotates with uniform angular velocity at ω rad/s. The Klien's acceleration diagram for determining the acceleration of the piston P is shown by quadrilateral CQNO. The acceleration of the piston P with respect to the crank-pin C is given by
Theory of Machine mcq question image
Q.32
If some links are connected such that motion between them can take place in more than one direction, it is called
Q.33
The frequency of oscillation of a torsional pendulum is
Q.34
If the number of links in a mechanism is equal to l, then the numbers of possible inversions are equal to
Q.35
The unbalanced force due to reciprocating masses
Q.36
Angle of ascent of cam is defined as the angle
Q.37
Angle of descent of cam is defined as the angle
Q.38
The relation between number of links (l) and number of joints (j) in a kinematic chain is
Q.39
Angle of dwell of cam is defined as the angle
Q.40
Cam angle is defined as the angle
Q.41
The inversion of a mechanism is
Q.42
The rotor of a ship rotates in clockwise direction when viewed from stern and the ship takes a left turn. The effect of gyroscopic couple acting on it will be
Q.43
When the pitching of a ship is upward, the effect of gyroscopic couple acting on it will be
Q.44
Which of the following disciplines provides study of the relative motion between the parts of a machine and the forces acting on the parts?
Q.45
The component of the acceleration, parallel to the velocity of the particle, at the given instant is called
Q.46
The component of the acceleration, perpendicular to the velocity of the particle, at the given instant is called
Q.47
A combination of kinematic pairs, joined in such a way that the relative motion between the links is completely constrained, is called a
Q.48
In a steam engine, the link constitutes a
Q.49
The two elements of a pair are said to form a _________ when they permit relative motion between them.
Q.50
The primary unbalanced force is maximum _________ in one revolution of the crank.
0 h : 0 m : 1 s