HAL Management Trainee Mechanical Previous Year Question Papers

I need the HAL Management Trainee exam Mechanical Engineering Previous Year Question Papers so ca you please provide me this?

[Shaleen]

Following is the Previous Year Question Paper of the HAL Management Trainee exam Mechanical Engineering

Question 1
Given that x+3x=0, and x(0)= 1, x(0)=0, what is x(1)?
A
— 099
B
— 0.16
C
0.16
D
0.99

Question 2
A coin is tossed 4 times .What is the probability of getting heads exactly 3 times?
A
1/4
B
3/8
C
1/3
D
3/4

Question 3
The transverse shear stress acting in a beam of rectangular cross-section, subjected to a transverse shear load is
A
Variable with maximum at the bottom of the beam
B
Variable with maximum at the top of the beam
C
Uniform
D
Variable with maximum of the neutral axis

Question 4
A rod of Length L and diameter D is subjected to a tensile load P. Which of the following is sufficient to calculate the resulting chance in diameter?
A
Young’s modulus
B
Shear modulus
C
Poisson’s ratio
D
Both Young’s modulus and shear modulus

Question 5
A planar mechanism has 8 link and 10 rotary joints. The number of degrees of freedom of the mechanism, using Gruebler’s criterion, is
A
0
B
1
C
2
D
3

Question 6
An axial residual compressive stress due to a manufacturing process is present on the outer surface of a rotating shaft subjected to bending. Under a given bending load, the fatigue life of the shaft in the presence of the residual compressive stress is
A
Decreased
B
Increased or decreased, depending on the external bending load
C
Neither decreased nor increased
D
Increased

Question 7
2 moles of oxygen are mixed adiabatically with another mole of oxygen in mixing chamber, so that the final total pressure and temperature of the mixture become same as those of the individual constituents at their initial states. The universal gas constant is given as R. The change in entropy due to mixing, per mole of oxygen is given by
A
— Rln2
B
0
C
R ln2
D
R ln4

Question 8
Which one of the following is NOT a necessary assumption for the air-standard Otto cycle?
A
All processes are both internally as well as externally reversible
B
Intake and exhaust processes are constant volume heat rejection processes
C
The combustion process is a constant volume heat addition process
D
The working fluid is an ideal gas with constant specific heats

Question 9
Internal gear cutting operation can be performed by
A
milling
B
shaping with rack cutler
C
shaping with pinion cutter
D
bobbing

Question 10
For whet value of a, if any, will the following system of equations in x, y and z have a solution?2x + 3y =4x+y+ x=4x+2y-z=a
A
Any real Number
B
0
C
1
D
there is no such value

Question 11
A solid circular shaft of diameter 100 mm is subjected to an axial stress of 50MPa. It is further subjected to a torque of 10 kNm. The maximum principal stress experienced on the shaft is closest to
A
41 MPa
B
8 MPa
C
164 MPa
D
204 MPa

Question 12
A compression spring is made of music wire of 2 mm diameter having a shear strength and snear modulus of 800 MPa and 80 GPa respectively The mean coil diameter is 20 mm. free length is 4O mm and the number of active coils is 10. If the mean coil diameter is reduced to 10mm. the stiffness of the spring is approximately
A
decreased by 8 times
B
decreased by 2 times
C
increased by 2 times
D
increased by 8 times

Question 13
A clutch has outer and inner diameters 100 ram and 40 mm respectively. Assuming a uniform pressure of 2 MPa and coefficient of friction of liner material 0.4. the torque carrying capacity of the clutch is
A
148 Nm
B
196 Nm
C
372 Nm
D
490 Nm

Question 14
A spur gear has a module of 3 mm. number of teeth 16, a face width of 36 mm and a pressure angle of 2. It is transmitting a power of 3 kW at 20 rev/s. taking a velocity factor of 1.5, and a form factor of 0.3, the stress in the gear tooth is about
A
32 MPa
B
46 MPa
C
58 MPa
D
70 MPa

Question 15
A two dimensional fluid element rotates like a rigid body. At a point within the element, the pressure is 1 unit. Radius of the Mohr’s circle, characterizing the state of stress at that point, is
A
0.5 unit
B
0 unit
C
1 unit
D
2 unit