The evaporation of 15.653 kg of water per hour from and at 100°C is called_________________?

Related Mcqs:

1. Equivalent evaporation of water is the evaporation “for a feed water supply at 100°C__________________?

   A. and its corresponding conversion into dry saturated steam at 100°C and 1.033 kg/cm2
   B. and its corresponding conversion into dry steam at desired boiler pressure
   C. conversion into steam at atmospheric condition
   D. conversion into steam at the same pres-sure at which feed water is supplied
   E. none of the above

2. Equivalent evaporation is the amount of water evaporated in a boiler from and at ____________________?

   A. 0°C
   B. 100°C
   C. saturation temperature at given pressure
   D. room temperature
   E. 20°C

3. The coal requirement per kW hour generation in the thermal power plant is of the order of__________________?

   A. 0.1 to 0.2 kg
   B. 0.2 to 0.4 kg
   C. 0.6 to 0.8 kg
   D. 1.0 to 1.5 kg
   E. 1.5 to 2 kg

4. The equivalent evaporation of a boiler is a measure to compare _________________?

   A. the given boiler with the model
   B. the two different boilers of the same make
   C. two different makes of boilers operat¬ing under the same operating conditions
   D. two boilers of same make but operaing under different conditions
   E. any type of boilers operating under any conditions

5. One kilowatt-hour energy is equivalent to ________________?

   A. 1000 J
   B. 360 kJ
   C. 3600 kJ
   D. 3600 kW/sec
   E. 1000 kJ

6. A ship whose hull length is 100 m is to travel at 10 m/sec. For dynamic similarity, at what velocity should a 1:25 model be towed through water ?

   A. 10 m/sec
   B. 25 m/sec
   C. 2 m/sec
   D. 50 m/sec
   E. 250 m/sec

7. The property by virtue of which a liquid opposes relative motion between its different layers is called_________________?

   A. surface tension
   B. co-efficient of viscosity
   C. viscosity
   D. osmosis
   E. cohesion

8. In water wall furnace, the heat is transferred to the water-walls by _________________?

   A. convection
   B. radiation
   C. conduction
   D. radiation and conducton
   E. radiation and convection

9. Natural water circulation, by convection in water tube boilers, with increase in pressure of boiler _________________?

   A. increases
   B. decreases
   C. remains unaffected
   D. first increases and then decreases
   E. first decreases and then increases

10. 100% efficiency of a thermal cycle cannot be achieved because of __________________?

    A. frictional losses
    B. it is not possible to achieve 0°K temperature
    C. leakage
    D. non-availability of ideal substance
    E. none of the above