Q.1
In a flat collar pivot bearing, the moment due to friction is proportional to
Q.2
Which of the following disciplines provides study of relative motion between the parts of a machine?
Q.3
Which of the following is a turning pair?
Q.4
When the load on the engine increases, it becomes necessary to increase the supply of working fluid and when the load decreases, less working fluid is required. The supply of the working fluid to the engine is controlled by a
Q.5
Oldham's coupling is the
Q.6
The static balancing is satisfactory for low speed rotors but with increasing speeds, dynamic balancing becomes necessary. This is because, the
Q.7
In a locomotive, the maximum magnitude of the unbalanced force along the perpendicular to the line of stroke, is known as
Q.8
In a locomotive, the resultant unbalanced force due to the two cylinders along the line of stroke, is known as
Q.9
The displacement of a flat faced follower when it has contact with the flank of a circular arc cam, is given by (where R = Radius of flank, r₁ = Minimum radius of the cam, and θ = Angle turned through by the cam)
Q.10
In order to facilitate starting of locomotive in any position, the cranks of a locomotive with two cylinders, are placed at
Q.11
A spring controlled governor is said to be stable if the controlling force line when produced intersects the Y-axis
Q.12
An involute pinion and gear are in mesh. If both have the same size of addendum, then there will be an interference between the
Q.13
A kinematic chain requires at least
Q.14
In a four stroke I.C. engine, the turning moment during the compression stroke is
Q.15
Typewriter constitutes
Q.16
The minimum force required to slide a body of weight W on a rough horizontal plane is
Q.17
In involute gears, the pressure angle is
Q.18
In order to balance the reciprocating masses,
Q.19
The ratio of maximum fluctuation of energy to the work-done per cycle is called
Q.20
Which of the following statement is correct for involute gears?
Q.21
When the elements of a pair are kept in contact by the action of external forces, the pair is said to be a
Q.22
The number of centers in a crank driven slider crank mechanism is
Q.23
The contact ratio is given by
Q.24
The danger of breakage and vibration is maximum
Q.25
The cam follower generally used in aircraft engines is
Q.26
The relation between number of pairs (p) forming a kinematic chain and the number of links (l) is
Q.27
Relationship between the number of links (L) and number of pairs (P) is
Q.28
The two elements of a pair are said to form a higher pair, when they
Q.29
Peaucellier’s mechanism has
Q.30
The brake commonly used in railway trains is
Q.31
The swaying couple is due to the
Q.32
Pitch point on a cam is
Q.33
The equivalent length of a simple pendulum which gives the same frequency as a compound pendulum is
Q.34
The frequency of oscillation of a compound pendulum is
Q.35
The minimum periodic time of a compound pendulum is
Q.36
The mechanism consisting of three turning pairs and one sliding pair, is called a
Q.37
In an ideal machine, the output as compared to input is
Q.38
The velocity of the belt for maximum power is (where m = Mass of the belt in kg per meter length)
Q.39
In steady state forced vibrations, the amplitude of vibrations at resonance is __________ damping coefficient.
Q.40
The Klein's diagram is used when
Q.41
Two heavy rotating masses are connected by shafts of lengths l₁, l₂ and l₃ and the corresponding diameters are d₁, d₂ and d₃. This system is reduced to a torsionally equivalent system having uniform diameter d = d₁ of the shaft. The equivalent length of the shaft is
Q.42
The radius of a friction circle for a shaft rotating inside a bearing is (where r = Radius of shaft, and tan φ = Coefficient of friction between the shaft and bearing)
Q.43
Any point on a link connecting double slider crank chain will trace a
Q.44
The method of obtaining different mechanisms by fixing in turn different links in a kinematic chain, is known as
Q.45
The radial distance from the top of a tooth to the bottom of a tooth in a meshing gear, is called
Q.46
Flexible coupling is used because
Q.47
In its simplest form, a cam mechanism consists of following number of links
Q.48
The steering of a ship means
Q.49
In a reciprocating steam engine, when the crank has turned from inner dead centre through an angle θ, the angular velocity of the connecting rod is given by
Q.50
In automobiles the power is transmitted from gear box to differential through
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