Mechanical Engineering - Online Test
Q1. The equation sin(z) = 10 has
Answer : Option A
Explaination / Solution:
No Explaination.
Q2. In a CNC program block, N002 G02 G91 X40 Z40…, G02 AND G91 refer to
Answer : Option C
Explaination / Solution:
No Explaination.
Q3. A concentrated mass m is attached at the centre of a rod of length 2L as shown in the figure. The
rod is kept in a horizontal equilibrium position by a spring of stiffness k. For very small amplitude
of vibration, neglecting the weights of the rod and spring, the undamped natural frequency of the
system is
Answer : Option D
Explaination / Solution:
No Explaination.
Q4. A single degree of freedom system having mass 1 kg and stiffness 10kN/m
initially at rest is subjected to an impulse force of magnitude 5 kN for 10-4 seconds. The amplitude in mm of the resulting free vibration is
Answer : Option C
Explaination / Solution:
No Explaination.
Q5. Two large diffuse gray parallel plates, separated by a small distance, have
surface temperatures of 400 K and 300 K. If the emissivities of the surfaces are
0.8 and the Stefan-Boltzmann constant is 5.67 × 10-4 W / m2 K4, the net radiation
heat exchange rate in kW / m2 between the two plates is
Answer : Option A
Explaination / Solution:
Q6. For real values of x , the minimum value of the function
f (x) = exp(x) + exp(- x) is
Answer : Option A
Explaination / Solution:
Q7. Little’s law is relationship between
Answer : Option B
Explaination / Solution:
No Explaination.
Q8. Consider two infinitely long thin concentric tubes of circular cross section as shown in the figure.
If D1 and D2 are the diameters of the inner and outer tubes respectively, then the view factor F22 is given by
Answer : Option D
Explaination / Solution:
No Explaination.
Q9. A hinged gate of length 5 m, inclined at 30° with the horizontal and with water
mass on its left, is shown in figure below. Density of water is 1000 kg / m2. The
minimum mass of the gate in kg per unit width (perpendicular to the plane of
paper), required to keep it closed is
Answer : Option D
Explaination / Solution:
No Explaination.
Q10. Which of the following functions would have only odd powers of x in its Taylor series expansion about the point x = 0 ?
Answer : Option A
Explaination / Solution:
