Home
MCQ QUIZ APP DOWNLOAD

What is the correct answer?

4

As per international norms, the maximum permissible value of noise level in the industrial environment is __________ decibels as measured at a distance of 1.5 metres from the source of noise.

A. 110

B. 85

C. 60

D. 45

Correct Answer :

B. 85


Related Questions

Thermal conductivity of a material does not depend upon its Which of the following heat treatment processes is usually applied to… At the point of boundary layer separation in fluid flow, the In case of brasses, with decreasing zinc percentage and increasing copper… Damage to metal surface by mechanical action is called In chemical dehumidification process __________ is not a heat treatment process. Large diameter reinforced cement concrete (RCC) pipes are generally joined… The mechanism which changes the value of manipulated variable in response… Work done by a/an __________ process is determined by ∫p. dv Drills are usually made of Plasma is Which of the following metals is the most prone to work hardening? The minimum carbon content in steel should be __________ percent for it… Adhesives Copper deposits are found in India at the following location: Basicity of the slag in Indian blast furnace is in the range of The value of for air & most common gases can be safely assumed to be Enzymes belong to the category of Addition of __________ to steel does not help in improving its machinability. Latent heat of dry steam at atmospheric pressure is 539 Kcal/kg; which… Specific gravity of hot metal (pig iron) is __________ times that of the… The most detrimental impurity in high pressure boiler feed water is The pressure drop per unit length for laminar flow of fluid through a… With increase in annealing temperature, the following defect density decreases. Nuclear fission of one atom of uranium-235 produces the energy equivalent… Which of the following materials has the maximum shrinkage allowance? Dowtherm is a According to thermodynamic Fahrenheit scale, the fundamental interval… __________ is the trade name assigned to a nonferrous cast alloy composed…