Steam Boilers, Engines, Nozzles and Turbines MCQ Tests

Practice Test: Question Set - 33


1. The diameter of fire tube of Cornish boiler compared to its shell is
    (A) One half
    (B) One third
    (C) One fourth
    (D) One fifth

2. The number of flue tubes in Lancashire boiler is
    (A) Zero
    (B) One
    (C) Two
    (D) Four

3. The fire tubes in, a Coarran and Scottish marine boiler are
    (A) Horizontal
    (B) Vertical
    (C) Inclined
    (D) Both horizontal and vertical

4. A boiler in India should conform to safety regulations of
    (A) DIN
    (B) BS
    (C) ASTM
    (D) IBR

5. Thermal efficiency of well maintained boiler will be of the order
    (A) 40 %
    (B) 50 %
    (C) 75 %
    (D) 90 %

6. Size of boiler tubes is specified by
    (A) Mean diameter and thickness
    (B) Inside diameter and thickness
    (C) Outside diameter and thickness
    (D) Outside diameter and inside diameter

7. The diameter of fire tubes in Cochran boiler is of the order of
    (A) 2 cm
    (B) 6 cm
    (C) 8 cm
    (D) 12 cm

8. Gusset stays in a boiler are provided to
    (A) Prevent the bulging of flat surfaces
    (B) Avoid explosion in furnace
    (C) Prevent leakage of hot flue gases
    (D) Support furnace freely from top

9. Pulverized fuel is used for
    (A) Better burning
    (B) More calorific value
    (C) Less radiation loss
    (D) Medium sized units

10. Calorific value of coal is of the order of
    (A) 200-400 kcal/ kg
    (B) 800-1200 kcal/ kg
    (C) 2000-4000 kcal/ kg
    (D) 5000-8000 kcal/ kg

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