Can you give me question paper for BHEL Supervisor Trainee Mechanical engineer exam ?

Here I am giving you question paper for BHEL Supervisor Trainee Mechanical engineer paper in a file attached with it so you can get it easily.

1. A certain type of mixture is prepared by mixing brand A at Rs.9 a kg. with brand B at Rs.4 a kg. If the mixture is worth Rs.7 a kg., how many kgs. of brand A are needed to make 40kgs. of the mixture?
Ans. Brand A needed is 24kgs.

2. A wizard named Nepo says “I am only three times my son’s age. My father is 40 years more than twice my age. Together the three of us are a mere 1240 years old.” How old is Nepo?
Ans. 360 years old.

3. One dog tells the other that there are two dogs in front of me. The other one also shouts that he too had two behind him. How many are they?
Ans. Three.

4. A man ate 100 bananas in five days, each day eating 6 more than the previous day. How many bananas did he eat on the first day?
Ans. Eight.

5. If it takes five minutes to boil one egg, how long will it take to boil four eggs?
Ans. Five minutes.

6. Three containers A, B and C have volumes a, b, and c respectively; and container A is full of water while the other two are empty. If from container A water is poured into container B which becomes 1/3 full, and into container C which becomes 1/2 full, how much water is left in container A?

7. ABCE is an isosceles trapezoid and ACDE is a rectangle. AB = 10 and EC = 20. What is the length of AE?
Ans. AE = 10.

8. In the given figure, PA and PB are tangents to the circle at A and B respectively and the chord BC is parallel to tangent PA. If AC = 6 cm, and length of the tangent AP is 9 cm, then what is the length of the chord BC?
Ans. BC = 4 cm.

9 Three cards are drawn at random from an ordinary pack of cards. Find the probability that they will consist of a king, a queen and an ace.
Ans. 64/2210.

10. A number of cats got together and decided to kill between them 999919 mice. Every cat killed an equal number of mice. Each cat killed more mice than there were cats. How many cats do you think there were ?
Ans. 991.

11. If Log2 x – 5 Log x + 6 = 0, then what would the value / values of x be?
Ans. x = e2 or e3.

12. The square of a two digit number is divided by half the number. After 36 is added to the quotient, this sum is then divided by 2. The digits of the resulting number are the same as those in the original number, but they are in reverse order. The ten’s place of the original number is equal to twice the difference between its digits. What is the number?
Ans. 46

13.Can you tender a one rupee note in such a manner that there shall be total 50 coins but none of them would be 2 paise coins.?
Ans. 45 one paisa coins, 2 five paise coins, 2 ten paise coins, and 1 twenty-five paise coins.

14.A monkey starts climbing up a tree 20ft. tall. Each hour, it hops 3ft. and slips back 2ft. How much time would it take the monkey to reach the top?
Ans.18 hours.

15. What is the missing number in this series? 8 2 14 6 11 ? 14 6 18 12
Ans. 9

16. The minute hand of a clock overtakes the hour hand at intervals of 64 minutes of correct time. How much a day does the clock gain or lose?
Ans. 32 8/11 minutes.

17. Solve for x and y: 1/x – 1/y = 1/3, 1/x2 + 1/y2 = 5/9.
Ans. x = 3/2 or -3 and y = 3 or -3/2.

18. Daal is now being sold at Rs. 20 a kg. During last month its rate was Rs. 16 per kg. By how much percent should a family reduce its consumption so as to keep the expenditure fixed?
Ans. 20 %.

19. Find the least value of 3x + 4y if x2y3 = 6.
Ans. 10.

20. Can you find out what day of the week was January 12, 1979?
Ans. Friday.

21. A garrison of 3300 men has provisions for 32 days, when given at a rate of 850 grams per head. At the end of 7 days a reinforcement arrives and it was found that now the provisions will last 8 days less, when given at the rate of 825 grams per head. How, many more men can it feed?
Ans. 1700 men.

22. From 5 different green balls, four different blue balls and three different red balls, how many combinations of balls can be chosen taking at least one green and one blue ball?
Ans. 3720.

23. Three pipes, A, B, & C are attached to a tank. A & B can fill it in 20 & 30 minutes respectively while C can empty it in 15 minutes. If A, B & C are kept open successively for 1 minute each, how soon will the tank be filled?
Ans. 167 minutes.

24. A person walking 5/6 of his usual rate is 40 minutes late. What is his usual time?
Ans. 3 hours 20 minutes.

25. Mr. Shah decided to walk down the escalator of a tube station. He found that if he walks down 26 steps, he requires 30 seconds to reach the bottom. However, if he steps down 34 stairs he would only require 18 seconds to get to the bottom. If the time is measured from the moment the top step begins to descend to the time he steps off the last step at the bottom, find out the height of the stair way in steps?
Ans.46 steps.

1)Unit of Entropy (J/kg K or kJ/kg K)
2)A mass of 100kg is falling from a height of 1 m and penetrates the sand into for 1 m. What is the
resistance force given by sand.
3)Ratio of specific heats of air. (1.41)
4)A body weighs 3 kg in air. If it is submerged in a liquid, it weighs 2.5 kg. What is the specific gravity
of the liquid.
5)Two cars travell in same direction at 40 km/hr at a regular distance. A car comes in a opposite
direction in 60km/hr. It meets each car in a gap of 8 seconds. What is the distance between them?
6)A simple problem involing in hoops stress. For sphere: M= [3/2]*p*V*[density of pressure vessel
material/Maximum working stress it can tolerate] For Thin walled pressure walls: Hoops stress or
stress in the radial direction =p*r/2t
7)A problem in force calculation in a body moving in a inclined surface.
8)Composition of bronze. (Copper+zinc)
9)Compostion of stainless steel.(iron+chromium+nickel+carbon)
10)CI is manifactured in which process. (cupola process)
11)What percentage of carbon is preset in pig iron. (4.5 to 6%)
12)Water is available at 10m height. What is the pressure available? (pressure=density*g*height;
p=1000*9.81*10; p=98100N/m2)
13)What will happen if the speed of the centrifugal pump doubles.
14)The unit eV is widely used in ? (Nuclear and atomic physics)
15)What will happen to the resistance, when the diameter of the conductor is doubled?
16)The power comsumed by a electrical device is 1000W at 250V, What is the resistance in the device?
(Power= Voltage*current; Current=Power/Voltage, Current,I=1000/250=4
amps. V=IR, Therefore R=250/4=62.5 ohms)
17)Why DC current is not used in transformer.
18)On what principle the sonar/ radar( I dont remember) works?
19)Bending moment diagram for the UDL is in what shape?
20)Function of the distributor in petrol vehicles? (Spark timing)
21)Which is not present in CI engines? (carburrettor)
22)What will happen if one cylinder recieves more amount of fuel spray from injectors than other
injectors?
23)Purpose of draft tube in hydraulic turbines? (The purpose of a draft tube is toconvert some of the
kinetic energy of the flow from the runner (the rotating part of the turbine) intopressure energy and
thereby increase the efficiency ofthe hydro power turbine. )
24)What is the effect or reheater in the gas turbine? (The advantage of reheater is significantly
increased thrust; the disadvantage is it has very high fuel consumption and inefficiency)
25)Problems in involving with fricition coefficient.
26)Factor of safety = Yeild stress/Working stress.
27)Which is the example of non parallel power transmission (Universal coupling)
28)For perpendicular shafts worm gear is used.
29)A planet gear with 25 teeth is meshed with a sun gear of 100 teeth. Both are connected using a arm.
How many rotations are needed for planet gear to complete one rotation around the sun gear?
30)What is equivalent spring constant for spring in parallel?
31) Some questions was asked related to boundry layer and vortex flow.
32) 5 questions were asked in PERT, Process planning, Product planning, Break even analysis.
33)How are tungsten and sintered composite materials are machined? (Electro Discharge Machining,
EDM)

A) Technical
B) Aptitude
Both parts consists 120 marks each. There is negative marking which 0.2.
Technical paper
1) How many links in slider crank mechanism?
2) Deflection of cantilever beam subjected to end point load?
3) Stress concentration factor Kf =?
4) What is the unit of BHN?
5) What is efficiency of riveted joint?
6) Composition of Munz metal?
7) One shaft is subjected to torque 1700 N-m having shear strength of 40Mpa. Determine the diameter?
8) A reversible engine is working between the 600F and 60F. Carnot efficiency is equal to =
9) Coefficient of restitution lies between =
10) Pectlet number is equal to = a)Re*Nu b)Re*Pr c)Re*Gr
11) Formula of effectiveness of heat transfer =
12) Emissivity depends on
13) Reynolds number formula
14) Production process for Al?
15) Thick metals welded by following processes…………
16) Logarithmic decrement is given by =
17) Magnification factor at resonance is given by =
18) Cutting forces decreases by = a) increasing rake angle b) decreasing rake angle c) increasing relief
rake angle
19) Some problem on Mohr’s circle radius…
20) Volumetric strain =
21) Pendulum problem Time is given length = ?
22) For undamped system Transmission Ratio is R then a) b)
23) Which is not related to CI engine = ans) spark plug
24) Cotter joint generally fail by
25) Which coupling is used for intersecting shafts?
26) No of teeth on gear and pinion is given, center distance is given, module = ?
27) Coefficient of friction and angle is given, what is ration of tension in belt?
28) What is lamis thoerm?
29) Condition for self locking ……
30) Discontinuous chips can be produced by ………….
31) For critical speed should be a)>√2 b) >√3
32) Air at 20C blows over a hot plate 50 by 75 cm maintained at 250C. The convective heat transfer
coefficient is 25W/m2. Cal the heat transfer.
33) Metacenter always lies ………….
34) Rotometer is used to measure….
35) Formula for effort of a governor……
36) Stroboscope is used to measure…..
37) What is size of A4 paper?
38) Some problem on riveted joint…..
39) Modulus of rigidity G is given by……
40) Wave properties in solids is depends on elasticity.
41) Radiation heat transfer is directly proportional to ………….
42) Escape velocity is given by √2gR
43) Kinetic energy formula….
44) Corolis component…….
45) Potent ional Energy theory is given by…………….
46) Perpendicular axis thoerm…………
47) Pappus thoerm…….
48) Center of gravity of a spherical shell……………..
49) Angle and linear dimension is given by chamfer.
50) For thick cylinders ………………..
51) N = 10 to N = 10E5 cycles then it is …. a) finite life b)infinite life
52) Value of steel young’s modulus ……
53) Endurance strength of steel equal to …………
54) Three problems on strain gauges ….
55) Three problems on vectors some related to work done….
56) Straight line mechanism…
57) Some problem springs..
58) Design on thermal stresses can be considered for a) concrete b)steel rolls c)blast furnace
59) Velocity problem it is in the vector form to find displacement?
60) Hardness is a property