The temperature at which water boils depends mainly on ____________?
A. Air temperature B. Relative humidity C. Air pressure D. Air density E. The specific heat of air
physics
Melanoma (skin cancer) is associated with ______________?
A. ozone accumulation B. ozone depletion C. acid rain D. allergens
The earth’s atmosphere is divided into layers based on the vertical profile of __________?
A. Air pressure B. Air temperature C. Air density D. Wind speed
A step – down choppers can be used in___________?
A. Electric traction B. Electric vehicles C. Machine tools D. All of these
The output current in PWM DC – DC converters is equal to___________?
A. Average value of the output inductor current B. Product of an average inductor current and a function of duty ratio C. Either A. or B. D. None of these
The opposite of susceptibility is___________?
A. Immunity B. Emission C. Interference D. Electromagnetic compatibility