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This set of Production Engineering Multiple Choice Questions & Answers (MCQs) focuses on Production Engineering Set 9
Q1 | Feeler gauge is used for measuring clearance between two
- round surfaces
- spherical surfaces
- Parting off
- flat surfaces
- tapering surfaces
Q2 | Preheating is usually done while welding
- Cast iron
- Aluminium
- Thin sheets of mild steel
- Thick sheets of mild steel
- Copper
Q3 | EN series is used to designate
- aluminium alloys
- steels
- organic materials
- Parting off
- copper alloys
Q4 | Sweep patterns are used for
- Circular shape objects
- Rectangular objects
- Any large size objects
- Ellipucal objects
- Tiny objects
Q5 | Kuock out mechanism in press is used to
- chamfer the edges
- eject out the component
- shift the position of work piece after one operation
- None of the above
- Parting off
Q6 | While machining cast iron generally cutting fluid is not required because
- Cast iron surface is generally rough
- The cast iron jobs revolves at low speeds
- Cast iron contains graphite which does not allow temperatures to rise
- Cast iron contains carbon which cools the job
- None of the above
Q7 | An idler pulley is used for
- Changing the direction of rotation
- Running during no load period
- For stopping the motion frequently
- For adjusting the belt tension
- None of the above
Q8 | Trepanning operation is used for
- Producing large holes
- Under cutting
- Cutting grooves
- Finishing the ends of the job
- Bevelling the edges
Q9 | The difference between a plate and sheet is
- A plate is less than 5 mm in thickness
- A sheet is more than 5 mm in thickness
- A sheet is always more than 5 metres in length
- Sheet and plate are same and thickness is immaterial
- A sheet is always less than 5 mm thick and a plate more than 5 mm thick
Q10 | Arc blow is a welding defect which is encountered
- In thermit welding
- In MIG welding
- In arc welding using a.c. current
- In arc welding using d.c. current
- In gas welding
Q11 | At what rpm should a lathe be run to give a cutting speed of 25 m/min. When turning a rod of diameter 32 mm.
- Parting off
- 160 rpm
- 100 rpm
- 200 rpm
- 250 rpm
Q12 | Mechanical seals are used
- To prevent vibrations
- To prevent leakage
- To reduce friction
- To balance the equipment
- None of the above
Q13 | The thickness of clearance can be checked by
- Shap gauge
- Ring gauge
- Go and not go gauge
- Feeler gauge
- Any of the above
Q14 | A process applying oxide coating on aluminium is known as
- Anodizing
- Oxidizing
- Pickering
- Galvanising
- Blanking
Q15 | The advantage of mercury switch is
- No mechanical moving parts
- No open contacts
- Sealed from dirt and contamination
- Maintanance free
- All of the above
Q16 | The advantage of electronically operated automatic control system is
- Can be located in hazardous locations
- Needs no maintenance
- Does not require skilled service personnel
- No time lags, no transmission delays
- Does not cost much
Q17 | International Prototype Meter is made of
- Copper
- Mild steel
- Cast iron
- Copper-nickel alloy
- Platinum-iridium alloy
Q18 | Die sinking is
- The process of hardening of dies by sinking in quenching oil
- The local cooling of dies on the dia surface by pouring oil on the spot
- The process of cutting die impression
- The process of scrapping a die impression so that remaining metal may be retrieved for further use
- None of the above
Q19 | The mallets used in sheet metal shop are made from
- Parting off
- Cast iron
- Wood, fiber
- Mild steel
Q20 | A circular mill is
- A circle of 1 metre diameter
- A milling operation done on lathe is known as circular mill
- A milling machine used for cutting circular jobs by giving motion to the job during cutting
- Area of a circle of 1 mile radius
- Area of 0.001 inch diameter circle
Q21 | The method of joining metals by means of cast iron alloy whose melting point is below 425?C is known as
- Non-ferrous welding
- Soldering
- Brazing
- Galvanising
- Adhesive bonding
Q22 | The important factor to be considered while selecting a bearing is
- Applied load
- Operating speed range
- Required bearing capacity
- All of the above
- None of the above
Q23 | The purpose of sometimes adding exothermic materials to sand is
- To dry the mould
- To produce directional solidification by the generation of heat
- To produce chilled surfaces
- To heat the core
- To heat the sand
Q24 | The backlash between gears is expressed in terms of
- Difference between addendum and dedendum
- The difference between PCD of two gears
- The actual gear width on pitch circle minus the standard gear width for given number of teeth on gear
- Clearance between faces of the mating gears
- None of the above
Q25 | In all the following case chips produced are in the form of fragments EXCEPT
- Trepanning of steel
- Facing of bronze
- Shaping of cast iron
- Milling of aluminium
- Parting off