1831. In centreless grinding, the surface speed of regulating wheel is
5 to 15 m/min
15 to 60 m/min
60 to 90 m/min
90 to 120 m/min
✅ The correct answer is option B.
Mechanical Engineering
Prepare with the best Mechanical Engineering MCQs with answers and explanations for exams, interviews, and job tests. Our collection covers core topics such as engineering mechanics, thermodynamics, strength of materials, theory of machines, fluid mechanics, heat transfer, manufacturing processes, machine design, and power plant engineering. These Mechanical Engineering multiple-choice questions are designed for students, fresh graduates, and professionals preparing for NTS, PPSC, FPSC, PEC exams, GATE, university entry tests, and recruitment assessments. Strengthen your technical knowledge and problem-solving ability with our updated and comprehensive Mechanical Engineering MCQs.
1832. In a cam drive with uniform velocity follower, the sharp corners of the displacement diagram are rounded off at the beginning and at the end of each stroke. This is done
because of difficulty in manufacturing cam profile
because of loose contact of follower with cam surface
in order to have acceleration in beginning and retardation at the end of stroke within the finite limits
because the uniform ve
✅ The correct answer is option C.
1833. In a gas turbine, air is obtained from the atmosphere and compressed in an air compressor.
TRUE
FALSE
✅ The correct answer is option A.
1834. The torsional rigidity of a shaft is expressed by the torque required to produce a twist of one radian per unit length of a shaft.
TRUE
FALSE
✅ The correct answer is option A.
1835. One joule means that
work is done by a force of 1 N when it displaces a body through 1m
work is done by a force of 1 kg when it displaces a body through 1 m
work is done by a force of 1 dyne when it displaces a body through 1 cm
work is done by a forc
✅ The correct answer is option A.
1836. A spring controlled governor is found unstable. It can be made stable by
increasing the spring stiffness
decreasing the spring stiffness
increasing the ball mass
decreasing the ball ma
✅ The correct answer is option B.
1837. The rolling contact bearings as compared to sliding contact bearings have
small overall dimensions
accuracy of shaft alignment
low starting and low running friction except at very high speeds
all of the above
✅ The correct answer is option D.
1838. The ratio of the number of teeth to the pitch circle diameter in millimetres, is called
circular pitch
diametral pitch
module
none of these
✅ The correct answer is option B.
1839. In open cycle gas turbine plants
the indirect heat exchanger and cooler is avoided
direct combustion system is used
a condenser is used
all of the above
✅ The correct answer is option D.
1840. The compression ratio is the ratio of
swept volume to total volume
total volume to swept volume
swept volume to clearance volume
total volume to cleara
✅ The correct answer is option D.