Top 250+ Solved Theory of Machines MCQ Questions Answer
Q. Timing belt
a. Have no slip
b. Have maximum slip during starting
c. Slip in proportion to the time of operation
d. Are used to determine the life time of a belt
e. None of the above
Q. The speed ratio in case of micro gears is
a. Between 1.1 and 5
b. More than 10
c. Less than 1
d. Between 5 and 10
e. 1
Q. For a rational number for the pitch circle diameter and a rational number of teeth on the wheel, the circular pitch will work out to
a. An odd number
b. An even number
c. A rational number
d. An irrational number
e. None of the above
Q. A swinging field type dynamometer is
a. Torsion dynamometer
b. Vortex type dynamometer
c. Friction dynamometer
d. Electrical dynamometer
e. Transmission type of dynamometer
Q. Forced vibrations
a. Are followed by free vibrations
b. Are preceded by free vibrations
c. Take place at a frequency more than natural frequency
d. Are independent of natural frequency
e. None of the above
Q. A sphere of mass 100 kg moving at 10 m/s overtakes and collides with another sphere of mass 50 kg moving at 3 m/s in the same direction. If the impact is inelastic the velocity of of two masses after impact will be
a. 8.33 m/s
b. 4.17 m/s
c. Zero
d. 13.3 m/s
e. 6.67 m/s
Q. The critical speed of a shaft is affected by
a. Diameter of the disc
b. Eccentricity
c. Span of shaft
d. (A) and (B) above
e. (A), (B) and (C) above
Q. A standard gear cutter No. 3 is marked to cut 35-54 teeth. It implies that
a. The cutter is to be replaced after cutting 54 teeth
b. The cutter will be suitable for gears having 35 to 54 teeth
c. The cutter will be suitable for spur gear teeth cutting only
d. The cutter will provide correct profile for any gear having number of teeth in the range 35 to 54
e. None of the above
Q. A kinematic chain requires minimum of
a. 3 links and 3 turning pairs
b. 4 links and 4 turning pairs
c. 3 links and 4 turning pairs
d. 2 links and 3 turning pairs
e. 4 links and 5 turning pairs
Q. Which type of governor is preferred for gramophones?
a. Harting
b. Porter
c. Hartnell
d. Pickering
e. Watt
Q. An axial flow fan balanced at one speed often exhibits substantial vibrational effects when operated at other speeds, mainly due to
a. Unbalanced parts of fan
b. Aerodynamic unbalance
c. Primary critical speed effect
d. Secondary critical speed effect
e. Vibration in air
Q. In a kinematic chain the minimum number of kinematic pairs required is
a. Five
b. Three
c. Four
d. Two
e. One
Q. Which of the following is a spring controlled governor?
a. Harting governor
b. Pickering governor
c. Hartnell governor
d. Wilson hartnell governor
e. All of the above
Q. The sum of the tensions when the belt is running on the pulley is
a. Less than the initial tension
b. More than the initial tension
c. More than twise the initial tension
d. Half the initial tension
e. None of the above
Q. Klien's construction gives a graphical construction for
a. Velocity polygon
b. Slider crank mechanism
c. Angular accelerations
d. Acceleration polygon
e. Four bar chain mechanism