A.25 kcal/hr
B.75 kcal/hr
C.120 kcal/hr
D.240 kcal/hr
E.480 kcal/hr
Related Mcqs:
- The face temperatures of a flat wall are 650?C and 450?C respectively and the thermal conductivity of wall material is 0.30 kcal/m-hr-?C. For a wall thickness of 20 cm, the rate of heat conduction per square meter of wall area will be
- A tank 2 m square contains one metre of water. Now the tank is accelerated in the horizontal direction parallel to a pair of sides at the rate of 4 m/sec2. In order that there may be no spilling of water the minimum height of the tank should be
- A sphere of radius 40 cm is lagged to a radius of 50 cm. The temperatures of outer and inner surfaces are 66?C and 235?C respectively. Thermal conductivity of logging per cm thickness is 0.7 kcal/m-hr?C. The rate of heat leakage will be
- The surface temperatures of a flat wall are 650?C and 450?C respectively and the thermal conductivity of the wall material is 0.30 kcal/m-hr-?C. The heat flux for a wall of 20 cm thickness will be
- Two parallel opposed, infinite black planes are maintained at 300?C and 400?C respectively. If the temperature difference is doubled by increasing the temperature from 400?C to 500?C, the heat exchange rate will increase by a factor of about
- The heating value of petrol is
- Which of the following thermocouple can be used for temperatures above 1000?C
- The calorific value of diesel oil is expected to be around
- Calorific value of Indian coal is
- The heating value of diesel is approximately
