Top 50+ Solved Introduction to Noise MCQ Questions Answer
Q. White noise is random noise that has a audible frequency rangefrom
a. 320 to 100 KHz
b. 20 to 20KHtz
c. 120 to 20KHtz
d. 220 to 20KHtz
Q. Which among the following has a constant power spectral density over a widefrequency range?
a. White noise
b. Black noise
c. Pink noise
d. Blue noise
Q. Which is correct option for ear protection equipment?
a. Headphone
b. Use of cotton in ears
c. Ear defeders ,Ear plugs
d. All the above
Q. The technique or method to absorb undesirable sounds by soft and porous
a. Acoustic protection
b. Unacoustic protection
c. Audible protection
d. Decibel protection
Q. When sound interacts with materials and boundaries, it displays all the
a. Heat
b. Waves
c. Light
d. Electricity
Q. Soft materials absorb a large amount of
a. Heat energy
b. Light energy
c. Electromagnetic waves
d. Sound energy
Q. Which best describe the sound wave?
a. It may be longitudinal
b. It is always transverse
c. It is always longitudinal
d. All of the above
Q. Which of the following can not travel through a vacuum?
a. Electromagnetic wave
b. Radio wave
c. Sound wave
d. Light wave
Q. Sound wave has two main characteristics which are
a. Pitch and loudness
b. Tone and loudness
c. Highness and loudness
d. Rarefaction and compression
Q. When waves bend away from straight lines of travel, it is called
a. Reflection
b. Diffraction
c. Rarefaction
d. Refraction
Q. _________ is the sound power measured over the area upon which is received.
a. Sound pressure
b. Sound energy
c. Sound intensity
d. Sound pressure level
Q. It is an audio transducer that converts acoustic pressure in air into its equivalentelectrical impulses
a. Loudspeaker
b. Amplifier
c. Baffle
d. Microphone
Q. _________ is a pressure type microphone with permanent coil as a transducingelement.
a. Dynamic
b. Condenser
c. Magnetic
d. Carbon
Q. A capacitor stores energy in the form of an electrostatic field is a ______.
a. Dynamic Microphone
b. Condenser Microphone
c. Magnetic Microphone
d. Carbon Microphone