Production Engineering Set 25

Mechanical Engineering

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This set of Production Engineering Multiple Choice Questions & Answers (MCQs) focuses on Production Engineering Set 25

Q1 | Which one of the following methods be used for turning internal tapers only?
  • Taper attachment
  • Reamer
  • Form tool
  • Compound rest
  • Tailstock offset
Answer: Taper attachment
Q2 | Folding process of edges of the sheet metal is termed as
  • Bending
  • Seaming
  • Hemming
  • Parting off
Answer: Hemming
Q3 | In which operation on a work piece on lathe the spindle speed with be least?
  • Plain turning
  • Thread cutting
  • Taper turning
  • Finishing
  • Parting off
Answer: Thread cutting
Q4 | Specific temperature for the international Prototype metre is
  • Atmospheric
  • Melting point of ice
  • 0?F
  • 0?K
  • 0?C
Answer: 0?C
Q5 | The speed of grinding wheel is limited by
  • type of bond
  • grinding operation
  • rigidity of grinding machine
  • All of the above
  • Parting off
Answer: All of the above
Q6 | Which of the following is not a shearing process?
  • Notching
  • Perforating
  • Lancing
  • Blanking
  • Embossing
Answer: Embossing
Q7 | For which of the following material TIG welding is preferred?
  • Gold
  • Stainless steel
  • Mild steel
  • Silver
  • Aluminium
Answer: Aluminium
Q8 | Taper gererally used in lathes now-a-days is
  • Jarno
  • Morse
  • Brown and sharpe
  • None of above
  • Parkinson
Answer: Morse
Q9 | Point angle of 90? is used on drills for drilling on
  • Parting off
  • brass
  • bakelite
  • very hard materials
  • aluminium
Answer: bakelite
Q10 | In which of the following process hydraulic fluid acts as transfer media?
  • Ultrasonic machining
  • Electron beam machining
  • Water jet machining
  • Iron beam machining
  • Electro discharge machining
Answer: Water jet machining
Q11 | The pouring temperature for grey cast iron is
  • 2350?C
  • 1655?C
  • 1850?C
  • 1400?C
  • 1000?C
Answer: 1400?C
Q12 | The surface accuracy of slip gauges is of the order of
  • 0.02
  • 0.0002
  • 0.002
  • 0.2
  • 0.00002
Answer: 0.02
Q13 | Inside and outside diameters of a thin tube are to be measured. Only one of the following tools is to be selected. Which one would you choose?
  • Outside caliper
  • Odd-leg caliper
  • Inside caliper
  • Trammel
  • Vernier caliper
Answer: Vernier caliper
Q14 | The process for producing smooth surfaces by plastically moving away the raised micro-irregularities on the surface and passing it into the microcavities is known as
  • Buffing
  • Super finishing
  • Burnishing
  • Tumbling
  • Polishing
Answer: Burnishing
Q15 | In machine tools normally spindle speeds vary in
  • Arithmetical progression
  • Geometrical progression
  • Exponential progression
  • Logarithmic progression
  • None of the above
Answer: Geometrical progression
Q16 | The length of a hacksaw blade is measured from
  • Centre of hole at one end to the centre of hole at the other end
  • None of these
  • The formula L = 16 x width
  • Extreme one to-extreme end
  • 1830 rpm
Answer: Centre of hole at one end to the centre of hole at the other end
Q17 | The usual ratio of forward and return stroke in shaper is
  • 2 ; 3
  • 3 ; 2
  • 4 ; 3
  • 1 ; 2
  • 3 ; 4
Answer: 3 ; 2
Q18 | The machining allowance provided on pattern depends on
  • The casting orientation
  • Size and shape of casting
  • Degree of accuracy required
  • All of the above
  • None of above
Answer: All of the above
Q19 | Cutting speed in turning operations is maximum in case of
  • Cast iron
  • Mild steel
  • Aluminium
  • Bronze
  • Brass
Answer: Aluminium
Q20 | Which of the following is dead soft steel?
  • Parting off
  • C 45
  • 11 Mn 2
  • C 04
  • 33 Mo 55.
Answer: C 04
Q21 | As per ISS a steel specified as T 75 W 18 Co 10 Cr 4V2 will not have (as constituent)
  • Cobalt
  • Chromium
  • Vanadium
  • Electrical stampings
  • Copper
Answer: Copper
Q22 | The limitation of electronically operated automatic control system is
  • Considerable time lag
  • Poor accuracy
  • Complicated control response
  • It requires eloborate protection in hazardous locations
  • Serious effect of ambient conduction
Answer: It requires eloborate protection in hazardous locations
Q23 | The equal percentage characteristic of a valve is
  • Uniform flow rate
  • Flow rate proportional to valve lift
  • Each increment of plug movement produces a change in flow which is proportional to the amount flowing before the change occurred
  • Percentage increase in flow is equal to the percentage increase in lift
  • The flow rate before the plug movement is equal to the flow rate after the movement
Answer: Each increment of plug movement produces a change in flow which is proportional to the amount flowing before the change occurred
Q24 | Mould washes are used to produce
  • castings with different hardnesses at different locations
  • smooth surface on castings
  • castings with symmetrical sections
  • None of the above
  • Parting off
Answer: smooth surface on castings
Q25 | Two 20 mm thick plates are to be gas welded. What size of welding rod should be selected out of the following rods available?
  • 6 mm
  • 4.5 mm
  • 1.5 mm
  • 8 mm
  • 3 mm
Answer: 6 mm
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