Minimum safe distance between two liquid fuel storage tanks is equal to (where, H = height of the tank) ?

Related Mcqs:

1. Melting point & boiling points of liquid oxygen are respectively – 218.8°C & – 183°C, while the same for liquid nitrogen is – 210°C & – 195.8°C respectively. The difference in melting points of liquid oxygen & liquid nitrogen is not equal to 8.8 ?

   A. °C
   B. °F
   C. °K
   D. °R

2. ‘Dikes’ are low height walls made around the storage vessels meant for storing hazardous & inflammable material (e.g., petroleum products). Volume of dikes is equal to (where, V = volume of the storage vessel) ?

   A. V
   B. V/2
   C. 2V
   D. 3V

3. For which pair of the fuel gases, calorific value (C.V.) of one fuel is almost double that of the other on volume basis (i.e., kcal/Nm3) while the C.V. is same on weight basis (i.e., kcal/kg) ?

   A. Propane and acetylene
   B. Propane and LPG
   C. Sewage gas and gobar gas
   D. B.F gas and coke oven gas

4. Absolute zero, pressure will occur, when the molecular momentum of the system becomes zero. A liquid will cease to exist as liquid at________________?

   A. High vacuum
   B. Zero pressure
   C. 0°K
   D. Earth’s centre

5. Minimum temperature upto which water can be theoretically cooled down in the cooling tower by evaporative cooling is equal to the ______________ temperature of air?

   A. Wet bulb
   B. Dry bulb
   C. Saturation
   D. Dew point

6. The difference between gross & net calorific values of fuel is due to the___________________?

   A. Sensible heat carried away by the flue gases
   B. Heat carried away by the steam from the moisture content of the fuel
   C. Heat lost by radiation
   D. Heat carried away by steam from the combustion of hydrogen in the fuel

7. Alcohols are not suitable as diesel engine fuel because the cetane number of alcohols is____________________?

   A. Very low which prevents their ignition by compression
   B. Very high which prevents their ignition by compression
   C. Zero
   D. None of these

8. Which of the following varies as the square root of oil pressure during atomisation of fuel oil through a pressure jet burner ?

   A. Output & fineness
   B. Velocity
   C. Both A. & B.
   D. None of these

9. The amount of water evaporated in kg per kg of fuel burnt in a boiler is called the ______________ of a boiler ?

   A. Evaporative capacity
   B. Evaporation efficiency
   C. Thermal efficiency
   D. Steam load

10. ______________ the exhaust gas is an indication of the incomplete combustion of fuel?

    A. Low temperature of
    B. High temperature of
    C. High % of CO in
    D. High % of CO2 in