** ****MPSC Lecturer Production Engineer-Screening Test-2017 Question Paper**

**Barometric reading shows 740 mm of Hg at a gravitational acceleration of 9.81 m/s**^{2}. If mercury temperature is 10°C and density of mercury at this temperature is 13570 kg/m^{3}then the atmospheric pressure will be

(1) 98.5 kPa

(2) 9.85 kPa

(3) 0.985 kPa

(4) 0.0985 kPa

**Process is called reversible process if**- A system passes through a continuous series of equilibrium states during process.
- These equilibrium states cannot be located on property diagram, cannot be joined by line as a path.
- These equilibrium states can be located on property diagram; can be joined by line as a path. Which of the

Statement given above is/are correct?

(1) a only

(3) b and c only

(2) a and c only

(4) c only

**Wooden block of width 2.5 m and of depth 1.5 m; floats horizontally on water. The density of wooden block is 650 kg/m**^{3}and its length is 6.0 m, then volume of water displaced is

(1) 14.625 m^{3}

(2) 15.723 m^{3}

(3) 13.625 m^{3}

(4) 12.323 m^{3}

**A porter governor has equal arms, each 250 mm long and pivoted on the axis of rotation. Each ball has a mass of 5 kg and the mass of central load on the sleeve is 25 kg. The radius of rotation of the ball is 150 mm; when the governor begins to lift. What is the minimum speed of the governor?**

(1) 133.8 rpm

(2) 13.38 rpm

(3) 1.338 rpm

(4) 1338 rpm

**In cam and follower geometry, pitch circle is**

(1) The circle passing through pitch point and concentric with the base circle (2) The circle passing through pitch point and not-concentric with the base circle

(3) The smallest circle drawn tangent to the pitch curve

(4) None of the above

**A force of 100 N is acting at a point making an angle of 30**^{0}with horizontal. Component of this force along Y-direction will be

(1) 50 N

(2) 100 N

(3) 126 N

(4) 86.6 N

**Melting point of pure iron is**

(1) 1539°C

(2) 1550°C

(3) 1130°C

(4) 1100°C

**What is the yield stress for a polycrystalline alloy, when the, grain size is ASTM 8 (grain diameter = 0.002 mm)?**

Assume: Yield stress for crystal having no grain boundaries = 6, = 80 MNm^{-2}

Hall pitch constant = K = 0.63 MNm^{-3/2}

(1) 2143 MNm^{-2}

(2) 214.3 MNm^{-2}

(3) 21.43 MNm^{-2}

(4) 2.1 43 MNm^{-2}

**Sheets of___________can be produced by calendering process.**

(1) PVC

(2) PVDC

(3) Rubber

(4) ABS

**Determine the heat required for melting in case of arc welding of steel with a potential of 22 V and current of 230 V. The cross sectional area of the joint is 25 mm**^{2}and the travel speed is 6 mm/sec. Heat required to melt the steel may be taken as 10 J/mm^{3}

(1) 1365 J/s

(2) 1295 J/s

(3) 1500 J/s

(4) 250 J/s

**The process of providing self-lubricating properties to powder metal parts is called**

(1) Coining

(2) Infiltration

(3) Impregnation

(4) None of these

**Upset forging causes by**

(1) Steadily applied pressure instead of impact force

(2) Force the end of a heated bar into a desired shape

(3) Forging method to reduce the diameter of a bar

(4) None of above

**The welding process used extensively in joining mild steel shanks to high speed drills is**

(1) Upset butt welding

(2) Projection welding

(3) Flash butt welding

(4) None of these

**The process in which expendable pattern of wax, polystyrene plastic or frozen mercury is used for making the casting mould is called**

(1) Plaster mould casting

(2) Die-casting

(3) Slush casting

(4) Investment casting

**What will be the blanking pressure to produce a washer 5 cm outside diameter and 2.4 cm diameter hole from a material 4 mm thick having a shear strength of 360 N/mm**^{2}?

(1) 220 kN

(2) 390 kN

(3) 31 2 kN

(4) 226 kN

**Sweep pattern is used for moulding parts having**

(1) Rectangular shape

(2) Elliptical shape

(3) Symmetrical shape

(4) Complicated shape

**A Casting defects which occur near the ingates as rough lumps on the surface of a casting is known as**

(1) Shift

(2) Sand wash

(3) Swell

(4) Scab

** **

**Three dimensional solid construction, often called as**

(1) Solid modelling

(2) Primitive instancing

(3) Constructive solid geometry

(4) All above

**_________are used to move the joint of robots.**

(1) Transducers

(2) Actuators

(3) Controllers

(4) Vacuum

**Which of the following statement is correct about generative CAPP system?**

(1) No standard manufacturing plans are predefined or stored

(2) System based on principles of ‘Group Technology’

(3) System are based on part classification and coding

(4) Route sheet is stored in computer files

**In chemical machining, if selective machining is desired, the portions required to be left unmachined are covered with a resistant material, called a______ which can be stripped away after machining.**

(1) Resist

(2) Abrasive

(3) Felt

(4) Composite

**Which of the following is an advantage of ‘Laser beam machining’?**

(1) llnskilled operators are needed

(2) High production rate

(3) Low capital investment required

(4) The work piece is not subjected to large mechanical forces

**The useful tool life of HSS tool machining mild steel at 18 m/min is 3 hours. Calculate the tool life when the tool operates at 24 m/min. (Use Taylor’s tool life equation VT**^{n}= C, where n = 0.125)

(1) 18 min

(2) 30 min

(3) 16 min

(4) None of the above

**_____ is regarded as property by which the metal can be removed easily by grinding wheel with less wear and good surface finish.**

(1) Sensitivity.

(2) Grindability

(3) Finishability

(4) Grinding ratio

**Find the time required for drilling a 18 mm hole in a work piece having thickness 50 mm. Assume cutting speed 12 metres/minute and feed 0.2 mm/revolution. Neglect the length of approach.**

(1) 1.1 4 minutes

(2) 1.16 minutes

(3) 1.1 8 minutes

(4) 1.20 minutes

**The age specific failure rate is______**

where F (t) = Cumulative distribution function

P (t) = Survival probability or reliability

f (t) = Probability density function

(1 ) F(t)/P(t)

(2) P(t)/F(t)

(3) f(t)/F(t)

(4) None of the above

**The internal diameter of certain metallic rings is being controlled. A sample of size 25 is taken for the process control. If the sample mean shows a standard deviation of 0.1 mm, we can infer that the standard deviation for the operation is**

(1) 5.0mm

(2) 2.5mm

(3) 0.5 mm

(4) 0.25 mm

**The age specific failure rate for the negative exponential case, where M is the mean failure rate, is given by**

(1) M exp (-Mt)

(2) M

(3) 1- exp(-Mt)

(4) exp (-Mt)

**The reliability of a component having a MTBF equal to the time period under consideration is**

(1) 0.500

(2) 0.370

(3) 0.666

(4) 1 .OOO

**A ring gauge is used to**

(1) Test the accuracy of holes

(2) To check the pitch diameter of screw threads

(3) To check the accuracy of measuring instruments

(4) None of the above

**Twenty sample of parts were taken from a production line for 100% inspection, each sample containing 200 parts. The total number of defectives were 300. What will be the fraction defective (p) during the period ?**

(1) 0.010

(2) 0.125

(3) 0.085

(4) None of the above

**The total amount a dimension may vary and is the difference between the maximum and minimum limits is called**

(1) Tolerance

(2) Limits

(3) Fit

(4) Offset

**Which of the following gives actual measurement of any specific dimension ?**

(1) Inspection of variables

(2) Inspection of attributes

(3) Both (1) and (2)

(4) None of the above

**Which among the following is a type of control chart for variables ?**

(1) C chart

(2) P chart

(3) U chart

(4) X chart

**Which of the following layouts is suited to job production ?**

(1) Process layout

(2) Product layout

(3) Fixed position layout

(4) Plant layout

**What does symbol ‘0’ imply in method study ?**

(1) delay

(2) inspection

(3) operation

(4) transport

**Percent idle time for men or machines is found by**

(1) time study

(2) work sampling

(3) work study

(4) method study

**The application of a concurrent design approach results in reducing**

(1) Production design and development time

(2) Product design and development time and speeds the product to market

(3) Speeds up the product to market

(4) None of these

** **

**Assembly line**

(1) Flow shop type lines with dedicated machines arranged in U-type for best utilization

(2) Machines arranged in T-type

(3) Machines arranged in zig-zag way

(4) None of these

**Standardization will**

(1) Ensure interchangeability in local market

(2) Ensure competitiveness in local market

(3) Ensure perfectness

(4) Ensure interchangeability and competitiveness in world market place

**The conversion from reliability to safety factor depends on the following factors**

(1) Interface variable, standard deviation of strength and load, mean strength and mean load

(2) Interface variable and standard deviation of load only

(3) Standard deviation of strength and load only

(4) None of the above

**If there are more than one optimum solutions for the decision variable, the solutions is**

(1) Infeasible

(2) Unbounded

(3) Alternative

(4) None of the above

**JIT is best suited for**

(1) Job shop production

(2) Batch production

(3) Repetitive production

(4) Production in very low volume

**Another term commonly used for activity slack time is**

(1) Total float

(2) Free float

(3) Independent float

(4) All of the above

**According to transportation problem, number of basic cells will be exactly**

(1) m+n-0

(2) n+m-2

(3) m+n-1

(4) None of the above

**Dynamic programming is a mathematical technique dealing with the optimization of__________ stage decision process.**

(1) Multi

(2) Single

(3) Both (1) and (2)

(4) None of them

**The critical activity has**

(1) Maximum float

(2) Minimum float

(3) Zero float

(4) Average float

**PERT has following number of time estimates**

(1) One time estimate

(2) Two time estimates

(3) Three time estimates

(4) Four time estimates

**The purpose of dummy row or column in an assignment problem is to**

(1) Obtain balance between total activities and total resources

(2) Prevent a solution from becoming degenerate

(3) Providing a means of representing dummy problem

(4) None of the above

**Regression method of forecasting is applicable mainly for**

(1) Casual model

(2) Qualitative forecasting

(3) Time-series model

(4) Delphi method