⟩ What is attenuation in network engineering?
The degeneration of a signal over distance on a network cable is called attenuation.
The degeneration of a signal over distance on a network cable is called attenuation.
With increase in the number of carbon and hydrogen atoms in hydrocarbon molecules, the density of petroleum products A. decreases B. increases C. remains same D. unpredictable from the data
Visbreaking A. uses natural gas as feed B. is carried out at atmospheric pressure C. produces fuel oil of lower viscosity D. produces gasoline only
Hydrocracking employs A. high pressure & temperature. B. low pressure & temperature. C. high pressure and low temperature. D. high temperature and low pressure.
Cetane number of alpha methyl naphthalene is assumed to be A. 0 B. 100 C. 50 D. ∞
The general formula of naphthenes is A. CnH2n + 2 B. CnH2n-6 (where, n ≥ 6) C. CnHn-4 D. same as that for olefins i.e. CnH2n
The characterisation factor of crude petroleum oil is around A. 3 B. 11 C. 22 D. 28
Sour crude means the __________ bearing crude. A. asphalt B. sulphur compounds C. wax D. nitrogen compounds
Which of the following has the highest flash point of all? A. Diesel B. Kerosene C. Petrol D. Furnace oil
The order of preference for feedstock to a catalytic reformer is A. catalytic naphtha - coking naphtha - virgin naphtha. B. coking naphtha - virgin naphtha - catalytic naphtha. C. virgin naphtha - catalytic naphtha - coking naphtha. D. virgin naphtha - coking naphtha - catalytic naphtha.
True vapour pressure of a petroleum fraction __________ Reid vapour pressure. A. is less than B. is more than C. is same as D. may be either more or less than