MAHARASHTRA STATE BOILER OPERATION ENGINEERING EXAM 2013

Maharashtra state boiler operation engineering exam 2013 objective question with solution.
In 2013, only Paper-1 contained objective questions, while Paper-2 and Paper-3 had no objective questions.

 

Results

#1. A bimetallic strip is used in which of the following traps……

Inverted bucket

Thermostatic

Float trap

Thermodynamic.

#2. Main advantage of waste heat recovery in industry is

Reduction in pollution

Increase in efficiency

Both a and b

None of the above.

#3. The presence of calcium and magnesium bicarbonates in water to steam boiler would form

Neutral solution

Acidic solution

Alkaline solution

None of the above

#4. How many kg. of CO2 are produced in complete combustion of 16 kg of methane

42

44

16

None of the above.

#5. The difference between mean’ solid velocity and gas velocity in FBC boiler is called

Settling velocity

Fluidisation

Slip velocity

None of the above.

#6. Increase of steam pressure has the following effects on steam

Temperature goes up and enthalpy of evaporation goes down

Specific volume goes down and enthalpy of evaporation goes up

Steam temperature goes up and enthalpy of evaporation goes up

Steam temperature and enthalpy of evaporation go down.

#7. Which of the refractories has the highest melting point temperature?

Lime

Titania

Alumina

Silica

#8. Steam at 6 kg/cm2 (ab) has a sensible heat of 159 kCal/kg and latent heat of 498.5 Kcal/kg if steam is 95% dry than the total enthalpy is

625 kCal/kg

650 kCal/kg

553 kCal/kg

633 kCal/kg

#9. The unit of specific heat is

kCal/kg

kCal/kg°C

kCal/m3

kCal/m2 °C

#10. For complete combustion of every kg of FO firing, the approximately Theoretical quantity of air required is

18

14

10

20

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