One kilowatt-hour energy is equivalent to ________________?

Related Mcqs:

1. Mechanical equivalent of heat for 1 kcal or Joule’s equivalent is equal to_________________?

   A. 421 kgm
   B. 421 kgm
   C. 539 kgm
   D. 102 kgm
   E. 75 kgm

2. 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

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

   A. evaporative capacity
   B. factor of evaporation
   C. equivalent evaporation
   D. one boiler h.p.
   E. boiler efficiency

4. 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

5. 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

6. 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

7. Two pipe systems can be said to be equivalent, when the following quantities are same__________________?

   A. friction loss and flow
   B. length and diameter
   C. flow and length
   D. friction factor and diameter
   E. velocity and diameter

8. The change in internal energy in steam engines equals to__________________?

   A. work done during the rankine cycle ;
   B. work done during compression.
   C. work done during adiabatic expansion
   D. change in enthalpy
   E. none of the above

9. Maximum energy loss in a boiler occurs due to _______________________?

   A. unburnt carbon in ash
   B. incomplete combustion
   C. ash content
   D. flue gases
   E. radiation losses

10. Boiler H.P. is defined as the ________________ ?

    A. steam evaporation rate per kg of fuel fired
    B. work done in evaporating 1 kg of steam per hour from and at 100°C into dry saturated steam
    C. the evaporation of 15.65 kg of water per hour from and at 100°C into dry saturated steam
    D. work done by 1 kg of steam at saturation condition
    E. heat consumed in evaporating 1 kg water at 0°C to steam at 100°C and 1.033 kg/cm pressure