Top 550+ Solved Production Engineering MCQ Questions Answer
Q. In electrical resistance welding when the current passes through the metal, the greatest resistance is
a. At the surface
b. Through the metals to be welded
c. At the point of contact of the metal to be welded
d. At the point where electrode contacts the metal
e. None of the above
Q. The material for worm wheels is usually
a. Bronze
b. Cast iron
c. Copper
d. Aluminium
e. Cast steel
Q. In die casting process
a. The cost of dies is generally insignificant
b. Very high production rates are possible
c. Any size of casting can be prepared
d. Any metal can be cast
e. Dimensional accuracy is immaterial
Q. For resistance welding
a. Voltage is low and current is high
b. Voltage is high and current is low
c. Both voltage and current are high
d. Both voltage and current are low
e. None of the above
Q. Teeth of a hacksaw are
a. In a single plane
b. Parting off
c. Bent in one direction only
d. Bent alternately in opposite directions
Q. Die casted gears are generally used in
a. Counters
b. Toys
c. Cameras
d. Any of the above
e. None of the above
Q. In gas welding the maximum flame temperature occurs at
a. Inside the inner cone
b. The inner cone
c. Next to the inner cone
d. The outer cone
e. The tip of the flame
Q. Silicon steel is used for
a. Ball bearings
b. Boiler plates
c. Industrial knives
d. Dies
e. Electrical stampings
Q. The efficiency of abrasive particles depends up
a. purity
b. uniformity in composition
c. hardness
d. All of the above
e. Parting off
Q. The hardness of martensite in quenched plain carbon steels reaches almost a saturation value of carbon of about
a. 0.20%
b. 0.40%
c. 0.60%
d. 1.40%
e. None of the above
Q. In centreless grinding the work piece advances by
a. Force exerted by regulating wheel
b. Remains stationalry
c. Hydraulic force
d. Force exerted by grinding wheel
e. Push given by operator
Q. The power consumption in ultrasonic machining in kW/m2/min is of the order of
a. 200 kW/m3/min
b. 1000 kW/m3/min
c. 1 kW/m3/min
d. 10 kW/m3/min
e. 100 kW/m3/min
Q. Shell sands are coated with
a. molasses
b. urea formaldehyde
c. carbon disulphide
d. Parting off
e. silica grains
Q. A very soft whisper may have noise level of
a. About 100 db
b. About 140 db
c. About 30 db
d. About 40 db
e. About 10 db
Q. The width of slot eut by a hack-saw blade is
a. None of these
b. Less than the width of blade
c. Slightly more than the width of blade
d. Equal to the width of blade
e. 1830 rpm