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

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. To avoid vaporisation in the pipe line, the pipe line over the ridge is laid such that it is not more than____________________?

   A. 2.4 m above the hydraulic gradient
   B. 6.4 m above the hydraulic gradient
   C. 10.0 m above the hydraulic gradient
   D. 5.0 above the hydraulic gradient
   E. none of the above

3. The most effective inhibitor of grain growth, when added in small quantities is__________________?

   A. carbon
   B. vanadium
   C. manganese
   D. cobalt
   E. copper

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. One kilowatt-hour energy is equivalent to ________________?

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

8. A square surface 3 m x 3 m lies in a vertical line in water pipe its upper edge at water surface. The hydrostatic force on square surface is____________________?

   A. 9,000 kg
   B. 13,500 kg
   C. 18,000 kg
   D. 27,000 kg
   E. 30,000 kg

9. At the center line of a pipe flowing under pressure where the velocity gradient is zero, the shear stress will be_________________?

   A. minimum
   B. maximum
   C. zero
   D. negative value
   E. could be any value

10. During the opening of a valve in a pipe line, the flow is_________________?

    A. steady
    B. unsteady
    C. uniform
    D. laminar
    E. free vortex type