Pattern
100 questions - 120minutes
Mulitple choice type questions with 4 options for each question
Questions are similar to state ecet exam (engg entrance exam for diploma holders)
only technical... (No Aptitude, No General awareness, No General science)
3 marks for each correct answer and 1 negative mark for each wrong answer
Few questions from 2020 Scientific assistant (drilling) post
- The metal which is used most generally in casting. a) Cast iron
b) Aluminium👈👈👈
c) Mild steel
d) Grey Cast Iron - Which of the following is a higher pair? a) belt and pulley 👈👈👈
b) turning pair
c) sliding pair
d) screw pair - Priming is essential in a) Reciprocating pump
b) Jet pump
c) Centrifugal pump 👈👈👈 d) All the above
- Positive displacement pump of the following a) Reciprocating pump 👈👈👈
b) Centrifugal pump
c) Jet pump
d) None
- Discharge of a double acting reciprocating pump is a) LAN/60
b) 2LAN/60 👈👈👈
c) LAN/120
d) LAN - In diamonds, 1 carat = _____ a) 180 mg
b) 200 mg 👈👈👈
c) 220 mg
d) 300 mg - Ackermann system is used in a) Differential system
b) Propeller system
c) Steering system 👈👈👈 d) Lubrication system - Seam welding is also known as a) Continuous spot welding 👈👈👈
b) Multi spot welding
c) Arc welding
d) TIG welding - Brass and bronze are usually welded with which flame.... Oxidising flame
- A carburettor is used in which engine.... SI Engine
- Petrol engine fuel ignition quality is defined by.... Octane number
- Babbit metal is an alloy of.....
- Critical damping is a function of.....
- Vs and Vc is given and find compression ratio....
- In a 6 cylinder 4-stroke engine, Torque developed is 60 N-m and engine speed is 600rpm, then find power developed......... in kW
- Compound die is used for....
- In casting, top most part is called.... Cope
- Which metal is used to make railway tracks...
- Induction hardening is for.... Surface hardening process
- Which heat treatment process improves ductility... Annealing
- Hooke's law is applicable till... Proportionality limit
- Modulus of elasticity is.... linear stress upon linear strain
- Manoeuvrability in automobile requires... smaller turning radius
- Propeller shaft in an automobile is used to in between... Gears and differential
- Ratio of Inertia force and Viscous force gives.... Reynold's Number
- For turbulent flow, Re should be.... >4000
- Strain energy is... Max strain within the elastic limit
- Which of the following is a constant volume cycle... Otto cycle
- Combination of otto and diesel cycle gives... Dual cycle
- Given, in a constant pressure process V2=3V1 and T1 = 27 ⁰C find T2... Ans. 627 ⁰C
- The process which involves making a sheet into cups...
- Average velocity of the piston of 4-stroke IC engine... a) LN/2
b) 2LN
c) LN/4
d) LN/6 - Load used in Rockwell hardness test..... a) Major load
b) Minor load
c) Major and Minor load
d) None - Pin which connects Piston and Connecting rod..... Gudgeon pin
- Which is the basic part of IC engine to which all other parts such as cylinder head, valves, spark plug etc are assembled..... Cylinder block
- Top most piston ring is also called... Compression ring
- Which of the following has more hardness... a) Pearlite
b) Martensite
c)________
d)________ - A battery is specified by.... Ampere-hour
- Volumetric efficiency of a compressor increases with ______ in compression ratio.
- Percentage volume of Oxygen in atmospheric air... 21%
- Value of Universal Gas Constant.... 8.314 J/Mol K
- A fluid loses its is flow characteristics its reaches below which point a) Flash point
b) Fire point
c) Cloud point
d) Pour point 👈👈👈 - Purpose of impact test is to determine a) Toughness
b) Hardness
c) brittleness
d) Strength - If radius of a shaft is increased twice and length is made thrice, then yield strength a)Increases by 2 times
b)Decreases by 3 times
c)Increases by 4 times
d) None - Eutectoid reaction occurs at _____ temperature
- For which metal kerosene is used as lubrication.....
- Which pump is used for coolant supply for heavy drilling exploration works....
- Which drilling is done for general bore wells
- Tachometer in vehicles is used to measure....
- Mechanical efficiency of an IC engine is given by.... BHP/IHP
- Connecting rod connects... Piston and Crankshaft
- Camber angle in automobiles is used in....
- If a spring is cut into two halves, then its stiffness... Doubles
- Reciprocal of diametrical pitch... Module
- Stroke length is the distance between... TDC and BDC
- Gap between the top of a gear tooth and the bottom of a meshing tooth is....
- What happens in fullering process... necking of workpiece
- Cold working increases........
- A twisting force trying to rotate is called ........
- Material handling and plant layout is given by which chart
a)Gantt Chart
b)Emersion Chart
c)Travel Chart 👈👈👈
d)Bin chart - Fixed position layout is also called as... Statis product layout
- Two stroke engine is preferred in automobiles because of .....
- Fuel is ignitted in diesel engines by....
- A question on Pre-ignition, Ignition lag.....
- Elongation in tensile test indicates....
- HSS is a ...... a)StainlessSteel b)High carbon steel c)alloy steel d)chromium steel
- Reheating improves.....
- Regeneration improves....
- Entropy in a reversible process... zero
- 100% efficiency case is dealt is which law of thermodynamics....
- Two round tubes ends are welded using....
- In which milling process, rotation of the cutter and feed of workpiece in same direction... Down milling
- Generally preferred 4 cyclinder firing order... 1-3-4-2
- Charge in a petrol engine comprises... Air+fuel
- What happens at Triple point of water... Three phases(solid,liquid,gas) exist together
- Etchent used for a specific material is asked...
- ACME thread angle with base... 29 degrees
- Advantage of using a Four Jaw Chuck... Irregular workpieces can be holded
- 1 watt =....... 1 J/s or 1 N-m/s
- SI unit of stress.... Newton per Sq. meter
- The power plant used in automobile is.... IC Engine
- Work done in a constant volume process is..... Zero
- Purpose of Vernier callipers.... Radius, Thickness, depth
- Which gas is mostly used in TIG Welding.... Argon
