Placement Papers: Atlas Copco 2004 May 21 Chennai
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Examrace Placement Series prepares you for the toughest placement exams to top companies.
STEP I: WRITTEN TEST: 60 QUESTIONS 1 HOUR ELIMINATION ROUND
- Hygrometry deals with (ans. Moisture content in air)
- 1 kg-m = 9.81 J
- Relation between gauge, abs atm pressures
- Work-study deals with
- Time study deals with
- Expand MIS-Management Information System
- CPM and PERT deals with (ans. Determining the status of the project)
- To avoid cavitation in a centrifugal pump
- Inlet pressure should be high (ans)
- Discharge pressure should be high
- Expand NTP- (Normal temperature and press)
- Dalton's law of pressure
- (Total pressure equals sum of partial pressures)
- As per Avogadro's hypothesis
- (Molecular wt of all gases occupy the same volume under same conditions of temp and pressure)
- Use of intercooler- (to reduce work input)
- Use of after cooler- (to reduce volume of receiver)
- water hammer occurs (due to sudden obstruction in flow)
- ABC analysis deals with
- Main objective behind plant layout is
- to avoid back tracking
- To minimize the space occupied
- Efficiency of diesel engine as compared to petrol engine under same rated load (high)
- Which of the following is not present in a CI engine Carburetor (ans)
- Fuel pump
- Which of the following is not present in a SI engine Fuel injector (ans)
- pour point is (min temp at which a liquid flows at set condition)
- Zeroth law of thermodynamics
- In value engg value means____
- second law of thermodynamics deals with (ans: Entropy)
- Mach no deals with____
- Output = 9kW, Input = 30kW, Efficiency = (Ans: 30%)?
- Overall hear transfer co-eff. Present in
- Conduction
- Convection
- Conduction and convection
- All modes of heat transfer.
- Orifice Definition provision for flow of liquid with regulation
- If a block of ice floating in a tub of water and gets melted then what will be the level of water?
- Compressed air coming out of a punctured football
- Remains at the same temperature
- Becomes hotter
- Becomes cooler
- Heat transfer takes place as per
- Second law
- First law
- Zeroth law
- Choking in compressor means
- fixed mass flow rate independent of the pressure ratio (ans)
- Formation of frost in refrigerator
- Can be prevented if design is proper
- Heat transfer becomes more Immaterial (ans)
- Supercharging is the process of (increasing the density of the inlet charge)
- How will you find the unburnt mixture in exhaust gas
- Analyzing CO
- Analyzing Oxygen
- Compression ratio is the ratio of
- Delivery pr. To inlet pr.
- Inlet pr to delivery pr.
- Stroke volume to clearance volume
- To reduce moisture troubles the compressor main should be
- Vertical
- Horizontal
- Slanting
- Critical activity is
- Zero float
- High float
- Low float
- Cash discounts is based on
- Sold on credit
- Bargaining capacity of the seller
- Payment of instant cash
- 1 kW-hr = 3600 kJ.
- which process is more effective for compression
- isothermal (ans)
- adiabatic
- polytrophic
- What did WH Taylor do?
- An adiabatic compression is one in which (no heat enters or leaves the system)
- What happens if the refrigerator doors are kept open? The room will be warmed up gradually (ans)
- In which device, the temp of the refrigerant is the lowest
- Compressor
- Condenser
- Expansion valve
- Evaporator
- In break even analysis, profit occurs when (sales revenue >total cost)
- A material piece weighs 2.5 kg in air and 3 kg, when immersed in water, then sp. Gr is
- A body of sp. Gr 7 is immersed in mercury of sp. Gr 13.6. What percent of the body will be immersed in water (ans. 0.515)?
- 1 tone of refrigeration is cooling effect produced when melting one tone of ice
- Unit of power (Watt)
- What is the use of the reverse flow of air in compressor
- Cleaning the dust particles settled
- Velocity of the air flow increases
- pressure increases
- Rota meter Flow measurement
- If we use petrol in diesel engine (lot of fuel will remain unburnt)
- The intake of air in an air compressor can be had from
- An area nearby coal yard
- An area nearby a cooling tower
- A room in which conditioned air is maintained at 20C
- Atm air maintained at 1 C
STEP II: INTERVIEW-ELIMINATION ROUND
STEP III: GROUP DISCUSSION ELIMINATION ROUND
STEP IV: INTERVIEW WITH COMPANY CHIEF AT PUNE