About the Company:
GE (NYSE: GE) is an innovative and diversified technology company taking on the world’s toughest challenges. From aircraft engines and power generation to healthcare, GE operates in more than 100 countries and employs about 300,000 people worldwide. GE Global Research is one of the world’s most diversified industrial research labs, providing innovative technology for all of GE’s businesses. GE Global Research locations are in Niskayuna, New York (headquarters) and in Bangalore, India. The John F. Welch Technology Centre at Bangalore is home to state–of–the–art laboratories working on research and development in the areas of digital platforms, data visualization and analytics, electronic and electrical systems, materials and composites, process modeling and simulation, power electronics and controls.
Job Description: EEDP
The Edison Engineering Development Program (EEDP) is a GE Corporate entry-level program providing real-world and classroom technical training to promising early-career engineers. This is a 24-month program of 3 assignment rotations with one or more Global Research Technology Organizations. Rotations may also be at one of the co-located GE Engineering business units.
Desired Characteristics :
- Basic understanding of engineering and/or manufacturing fundamentals
- Strong oral and written communication skills
- Strong interpersonal and leadership skills
- High self-confidence
- Ability to motivate others
- Demonstrated scholastic achievements
Mechanical Section Questions for Placements:
(1) Pick up the wrong statement:
(A) Aluminium in steel results in excessive grain growth
(B) sulphur, phosphorous and lead improve machining properties of steel
(C) Manganese in steel induces hardness
(D) Nickel and chromium in steel help in raising the elastic limit and improve the resilience and ductility
(2) Which of the following statements regarding wrought iron is incorrect?
(A) Wrought iron is prepared by adding a suitable percentage of carbon to molten iron
(B) Wrought iron melts at 1535 C
(C) Wrought iron can easily be forge welded
(D) None of the mentioned options
(3) If a shaft of 50 mm diameter is to transmit power of 15 kW at a speed of 810 rpm, find the mean diameter of the pin for a material having a safe unit stress of 30 N/mm2.
(A) 9.10 mm
(B) 12.13 mm
(C) 15.16 mm
(D) 18.19 mm
(4) If the area of cross-section of a wire is circular and if the radius of this circle decreases to one-tenth of its original value due to the stretch of the wire by a load, then the modulus of elasticity of the wire will be:
(A) one-tenth of its original value
(B) unaffected
(C) ten times its original value
(D) twice the original value
Explanation: Modulus of elasticity is the property of material. It will remain same.
(5) The graph shown in the given represents the emission of a pollutant "X" from an SI engine for different fuel/air ratios. Identify the pollutant X.
(A) CO
(B) NOx
(C) CO2
(D) Hydrocarbons
Explanation: Maximum temperature is produced at slightly rich air mixture and NOx mission is proportional to temperature.
(6) The mechanical efficiency of a single cylinder four-stroke engine is 60%. The friction power is estimated to be 24 kW. What is the value of brake power developed by the engine?
(A) 36 kW
(B) 24 kW
(C) 48 kW
(D) 60 kW
(7) What is the carbon content in Hypo-eutectoid steel?
(A) equal to 0.8%
(B) from 0.8% to 2.0%
(C) less than 0.8%
(D) zero
(8) Identify among the following the steady flow energy equation for a boiler.
(A) \( h_1 + \frac{v_1^2}{2gJ} =h_2 + \frac{v_2^2}{2gJ}\)
(B) \(Q = (h_2- h_1)\)
(C) \( h_1 + \frac{v_1^2}{2gJ}+Q =h_2 + \frac{v_2^2}{2gJ}\)
(D) \(W_s = (h_2- h_1)+Q\)
Explanation: (B) is correct. Boiler assumptions:
- Turbine is perfectly insulated
- Change in potential and kinetic energy is neglected
- V1 ~ V2
(9) Identify among the following expressions the one which is the characteristic equation of a real gas?
(A) \( (p + a/v^2)(v-b) = RT \)
(B) \( (p - a/v^2)(v+b) = RT \)
(C) pv = RT
(D) pv = nRT
Explanation: Van der Waals equation
(10) Gas contained in a closed system consisting of the piston-cylinder arrangement is expanded. The work done by the gas during expansion is 70 kJ. Decreases in the internal energy of the gas during expansion are 45 kJ. What is the value of heat transfer during the process?
(A) 25 kJ
(B) 115 kJ
(C) 50 kJ
(D) 35 kJ
Explanation: By first law of thermodynamics, Q = W + U = 70 - 45 = 35 kW
(11) Which of the following is true regarding Oldham's coupling?
(A) It is the second inversion of double slider crank chain
(B) It is the third inversion of slider crank chain
(C) It is the fourth inversion of double slider crank chain
(D) It is the third inversion of double slider crank chain
(12)
(13) A solid circular shaft is subjected to a bending moment and torque, resulting in an equivalent twisting moment of $3*10^6$ N-mm. The shaft is made up of 45 C8 steel having an ultimate shear stress of 384 MPa. Assuming a factor of safety as 6, the diameter of the shaft is given by:
(A) \(d^3 = 125000 \: mm^3|)
(B) \(d^3 = 250000 \: mm^3|)
(C) \(d^3 = 500000 \: mm^3|)
(D) \(d^3 = 750000 \: mm^3|)
(14) Which of the following exists whenever a point moves along a path has the rotational motion?
(A) Coriolis component
(B) Hall's component
(C) Bernoulli's component
(D) None of the mentioned options
(15) Which of the following converts the rectilinear motion of a piston to rotary motion?
(A) Crosshead
(B) Slider Crank
(C) Gudgeon pin
(D) Connecting rod
(16) If the full-scale turbine is required to work under ahead of 80 m and to run at 625 rpm, then at what speed a quarter-scale turbine model tested under a head of 20 m must run?
(A) 105 rpm
(B) 562 rpm
(C) 986 rpm
(D) 1250 rpm
(17) If a pump is handling water and is discharging a certain flow Q at a constant total dynamic head requiring a definite B.H.P., the same pump when handling a liquid of specific gravity 0.75 and viscosity nearly same as of water would discharge:
(A) 0.75 Q
(B) Q/0.75
(C) 1.5 Q
(D) Same quantity of liquid
(18)
(21) For making which of the following weld, a backing ring inside a pipe joint is used?
(A) Butt weld
(B) Fillet weld
(C) Socket weld
(D) Tube weld
(22) For making fluid-tight joint, which of the following gives the value of initial tension in a bolt (in M.K.S. units)? (where d: nominal diameter of the bolt in mm)
(A) 142 X d
(B) 81 X d
(C) 284 X d
(D) 568 X d
Explanation: The initial tension in the bolt may be estimated by an empirical relation P=284d
(23) The endurance limit, that is resistance to fatigue of a machine element can be improved by:
(A) heat treatment
(B) electroplating
(C) grinding and lapping of the surface
(D) polishing
(24)
(25) Given the following data, calculate the piston displacement for a single-acting cylinder.
Stroke (S) = 12 in.
Speed of compressor (N) = 300 rpm
Rod diameter (D) = 2.5 in.
(A) 9.20 cfm
(B) 10.15 cfm
(C) 10.23 cfm
(D) 12.23 cfm
(26) Which pattern material is used in the case of investment casting?
(A) Wood
(B) Wax
(C) Metal
(D) Clay
(27) Which of the following best suits the purpose of chaplets?
(A) To induce directional solidification
(B) To prevent the core from collapsing
(C) To compensate for shrinkage
(D) To provide benting
(28) Which of the following methods of measurement is also known as 'fundamental method' of measurement?
(A) indirect method
(B) direct method
(C) absolute method
(D) substitution method
Explanation: Fundamental method of measurements also known as the absolute method of measurement, it is based on the measurement of the base quantities used to define the quantity
(29) An approximate value of a characteristic of a measuring instrument that serves as a guide to use it, is termed as:
(A) fixed value
(B) nominal value
(C) resolution value
(D) calibration value
(30) Which of the following are the beneficial effects of air vessel fitted to delivery side of a reciprocating pump?
1. Constant rate of discharge can be ensured
2. Power consumption can be reduced
3. Discharge can be increased
4. Constant velocity of the piston can be ensured
Select the correct answer using the option given below
(A) 1 and 4
(B)1 and 2
(C)2 and 4
(D)1 and 3
Explanation: The function of air-vessel are:
On suction side
i) To reduce the accelerating head. This will reduce the total vacuum head, reducing the possibility of separation and saving in power required for supplying the accelerating head.
ii) Pump can be run at a higher speed.
iii) Length of suction pipe below the air vessel can be increased.
On delivery side
i) To reduce the accelerating head and affecting in a large amount of power consumed in supplying the accelerating head.
ii) A uniform rate of discharge is ensured.
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