Define Noise, vibration and Harshness.
[3 marks]Explain shortly for Human ear anatomy with mechanism of hearing.
[4 marks]Note down various vibratory systems into the vehicle, Also discuss the study principle of Raw, Pitch and Yaw for velocity and movement.
[7 marks]Classify Mechanical vibrations. Also discuss the Damped and Un-damped vibration.
[3 marks]Explain the terms: 1] Degree of freedom 2]Periodic motion 3]Time period 4] Simple Harmonic Motion
[4 marks]Discuss the harmful effects of vibration and noises from the vehicular body. Also explain its reduction and eliminating methods in detail.
[7 marks]Write a short note on psychological effects of noise on human.
[3 marks]List the factors affecting on Piston Slap noise? Also write the counter measures for it.
[4 marks]Explain Anechoic chamber with sketch for the measurement of vehicle noise.
[7 marks]Explain sound waves and its propagation?
[3 marks]What are the differences between Structure borne and air borne noise.
[4 marks]Explain Bearing noise, Cam system noise and Timing chain noise from the automotive.
[7 marks]List the various methods to minimize the Vibration and Noise in vehicle.
[3 marks]Explain in brief Mechanical type vibration exciter with the help of sketch.
[4 marks]Explain Squeak, Rattle and Buzz noise with its frequency range. Also discuss the noise generating points and reduction methods in vehicle.
[7 marks]List the various vibration analysis softwares in brief.
[3 marks]Brief about Passenger seats and steering wheel vibration with the sketch.
[4 marks]Discuss Vibrations and Noise in vehicle driveline system. Also write for the terms shuffle, clunk, driveline boom and axle whine.
[7 marks]List the various NVH-legislations applicable for vehicles across the India.
[3 marks]Explain “Pass-by Noise” method with the help of sketch.
[4 marks]Draw and Explain vibration transfer path from vehicle suspension system to the other included systems of vehicle.1
[7 marks]What does it mean by “Churning effect” in automobile transmission systems and relate it with vibration phenomena.
[3 marks]What do you understand about vibration exciters? How does it work? Explain working principle of Electrodynamics exciters.
[4 marks]What does it mean by Air pumping noise? From where it is can be generated? What is the significance of tyre tread pattern on air-pumping noise?
[7 marks]