A. Hearing loss
B. Rupture of ear drum
C. Nervousness & fatigue
D. All A., B. & C.
Related Mcqs:
- The maximum permissible noise level to which a man working in a chemical plant can be exposed for eight hours per day is about ____________ decibels?
A. 60
B. 90
C. 105
D. 120 - Major sources of noise in furnace operation arises from air inspirators, combustion, side wall vibrations and fluctuation in the process heat load. A 50% increase in fuel firing rate may increase the furnace noise level by about ____________ decibels?
A. 3
B. 30
C. 7
D. 70 - Aerodynamic noise resulting from turbulent gas flow is the most prevalent source of valve noise in fluid flow control. It is caused due to_________________?
A. Reynold stresses
B. Shear forces
C. Both A. & B.
D. Neither A. nor B. - Maximum allowable noise exposure limits for a man working for 8 hours a day in a noisy chemical plant is about ______________ decibels?
A. 20
B. 60
C. 90
D. 120 - The major reason of hydrodynamic noise (i.e., noise resulting from liquid flow) is_________________?
A. Pipe vibrations
B. Cavitation
C. Boundary layer separation
D. Fluctuation in liquid flow - Industrial workers working in leather tanning & manufacturing units are prone to suffer from ___________________?
A. Respiratory ailments (e.g. bronchitis)
B. Skin diseases (e.g. dermatitis)
C. Silicosis
D. Blurred vision - Thermal pollution due to excessive heat & temperature in the working place causes__________________?
A. Reduction in working efficiency of manpower
B. Fatigue
C. High breathing rate
D. All A., B. & C. - Noise level inside a jet airliner in normal flight is about ______________ decibels?
A. 80
B. 100
C. 125
D. 150 - Noise level during normal conversation among men is about ______________ decibels?
A. 10
B. 45
C. 90
D. 115 - Noise level heard at a distance of about 100 metres from a jet engine with after burner is about _____________ decibels?
A. 120
B. 140
C. 170
D. 200
