Production Engineering Set 6

Mechanical Engineering

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This set of Production Engineering Multiple Choice Questions & Answers (MCQs) focuses on Production Engineering Set 6

Q1 | Loam moulds are
  • Used for symmetrical castings
  • Used in centrifugal castings
  • Used for very small articles
  • Made out of wet sand and then skin dried
  • Used for large castings
Answer: Used for large castings
Q2 | A thin tube is to be cut by hacksawing. Blades with following TPI are available which blade will be appropriate for the job
  • 14 TPI
  • 4- TPI
  • 18 TPI
  • 32 TPI
  • 20 TPI
Answer: 32 TPI
Q3 | The function of a transducer is
  • To decodify the input signal
  • To convert the primary signal into a more useful quantity usually an electrical impulse
  • To amplify the input signal
  • To codify the input signal
  • To modify the input signal
Answer: To convert the primary signal into a more useful quantity usually an electrical impulse
Q4 | Flange wrinkling is a defect associated with
  • Cold heating
  • Cold rolling
  • Deep drawing
  • Die casting
  • None of the above
Answer: Deep drawing
Q5 | Low helix drills are used for machining
  • Brass
  • bronze
  • bakelite
  • Any of the above
  • Parting off
Answer: Any of the above
Q6 | During continuous chip formation the maximum heat is taken away by
  • Depends on velocity of cutting
  • Chip
  • Tool
  • Work piece
  • Coolant
Answer: Depends on velocity of cutting
Q7 | Folding of edges of the sheet metal is done to
  • Parting off
  • To make the product stronger
  • To make the product attractive
  • Strengthen the edges and eliminate the sharp edges
Answer: Strengthen the edges and eliminate the sharp edges
Q8 | Poor surface finish and fast wear of tool are the characteristics of
  • Continuous chips with built up edges
  • Discontinuous chips
  • Inhomogencous chips
  • Low power consumption
  • Continuous chips
Answer: Continuous chips with built up edges
Q9 | In a Brinell hardness test the hardness number is determined by the measurement of
  • Width of depression
  • Depth of depression
  • Diameter of depression
  • Surface area of depression
  • None of the above
Answer: Surface area of depression
Q10 | Post cleaning is done in case of brazed joints to
  • Prevent corrosion
  • Remove scale
  • Strengthen the joint
  • Increase the strength of the joint
  • All of the above
Answer: Prevent corrosion
Q11 | For cutting sheet metal the chisel cutting edge is bevelled to an angle of
  • 90?
  • 40? - 45?
  • 30? - 60?
  • Parting off
Answer: 40? - 45?
Q12 | Core prints are
  • Impressions left on cores during core making
  • Hard surfaces on cores mainly meant for resisting deformation
  • Blue prints for core manufacturing
  • Holes or recesses in core meant for locating cores in position
  • None of the above
Answer: Holes or recesses in core meant for locating cores in position
Q13 | The most commonly used instrument for the measurement of mass or volume of flowing fluids in industrial plants are
  • Impeller type
  • Propeller type
  • Turbine type
  • Weight belt type
  • Any of the above
Answer: Any of the above
Q14 | During arc welding if the current is too low, it is likely to result in
  • Poor penetration
  • Excess piling up of weld metal
  • Excessive electrode consumption
  • All of the above
  • None
Answer: All of the above
Q15 | The disadvantage of die casting process is
  • Cost is less
  • Surface finish is poor
  • Heavy section can be easily cast
  • High production rates are not possible
  • Only certain non-ferrous alloys can be cast economically
Answer: Only certain non-ferrous alloys can be cast economically
Q16 | Which of the following provides an additional projection on a pattern and also forms a seat to support and locate the core in the mould?
  • Head
  • Mould print
  • Print
  • Check
  • Core print
Answer: Core print
Q17 | Aluminium gears are generally used in
  • Compressors
  • Speed reducers
  • Instruments
  • Worm wheels
  • None of the above
Answer: Instruments
Q18 | While machining copper alloys by electro chemical machining the electrolyte used is
  • Sodium chlorate
  • Sodium hydroxide
  • Sodium sulphate
  • Common salt
  • Sodium nitrate
Answer: Sodium sulphate
Q19 | Which of the following is relatively a low temperature brazing process?
  • Brass brazing
  • Silver manganese brazing
  • Copper brazing
  • Nickel chrome brazing
  • Silver brazing
Answer: Silver brazing
Q20 | In electrical resistance welding when the current passes through the metal, the greatest resistance is
  • At the surface
  • Through the metals to be welded
  • At the point of contact of the metal to be welded
  • At the point where electrode contacts the metal
  • None of the above
Answer: At the point of contact of the metal to be welded
Q21 | The material for worm wheels is usually
  • Bronze
  • Cast iron
  • Copper
  • Aluminium
  • Cast steel
Answer: Bronze
Q22 | In die casting process
  • The cost of dies is generally insignificant
  • Very high production rates are possible
  • Any size of casting can be prepared
  • Any metal can be cast
  • Dimensional accuracy is immaterial
Answer: Very high production rates are possible
Q23 | For resistance welding
  • Voltage is low and current is high
  • Voltage is high and current is low
  • Both voltage and current are high
  • Both voltage and current are low
  • None of the above
Answer: Voltage is low and current is high
Q24 | Teeth of a hacksaw are
  • In a single plane
  • Parting off
  • Bent in one direction only
  • Bent alternately in opposite directions
Answer: Bent alternately in opposite directions
Q25 | Die casted gears are generally used in
  • Counters
  • Toys
  • Cameras
  • Any of the above
  • None of the above
Answer: Any of the above
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