MECHANICAL ENGINEERING

1) A flat surface can be produced by a lathe machine, if the cutting tool moves _____
a. parallel to the axis of rotation of workpiece
b. perpendicular to the axis of rotation of workpiece
c. at an angle of 450
d. none of the above
ANSWER: perpendicular to the axis of rotation of workpiece


2) What is the function of cone pulley drive in lathe machines?
a. Drive the lead screw
b. Change the spindle speed
c. Drive the tail-stock
d. All of the above
ANSWER: Change the spindle speed


3) Which of the following is a mechanism for mechanized movements of the carriage along
longitudinal axis?
a. Cross-slide
b. Compound rest
c. Apron
d. Saddle
ANSWER: Apron


4) The function of taper turning process is to ____
a. reduce the diameter of a workpiece along its length
b. reduce the diameter by removing material about an axis offset from the axis of workpiece
c. remove the material from end surface of a workpiece
d. all of the above
ANSWER: reduce the diameter of a workpiece along its length


5) The process of bevelling sharp ends of a workpiece is called as ________
a. knurling
b. grooving
c. facing
d. chamfering
ANSWER: chamfering


6) In an isolated system, ________ can be transferred between the system and its
surrounding.
a. only energy
b. only mass
c. both energy and mass
d. neither energy nor mass
ANSWER: neither energy nor mass


7) Which of the following is an extensive property?
a. Volume
b. Pressure.

c. Viscosity
d. All of the above
ANSWER: Volume


8) How is absolute pressure measured?
a. Gauge pressure + Atmospheric pressure
b. Gauge pressure – Atmospheric pressure
c. Gauge pressure / Atmospheric pressure
d. None of the above
ANSWER: Gauge pressure + Atmospheric pressure


9) The extensive properties of a system, _______
a. are independent of the mass of the system
b. depend upon temperature of the system
c. depend upon the mass of the system
d. none of the above
ANSWER: depend upon the mass of the system


10) An isobaric process, has constant _____
a. density
b. pressure
c. temperature
d. volume
ANSWER: pressure


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