Segar cones are used for the determination of ____________ of refractories?

Related Mcqs:

1. Furnace atmosphere for softening temperature determination of refractories (in which Seger Cones are placed) should be __________________?

   A. Oxidising B. Neutral C. Either A. or B. D. Neither A. nor B....

2. PCE value (Segar cone) of Superduty refractories is more than 33, which is equivalent to a temperature of ____________ °C?

   A. 1520 B. 1630 C. 1670 D. 1730...

3. Pyrometric cone equivalent (PCE) value (Segar cone) of ‘Superduty refractories’ is more than 33 which corresponds to a temperature of _____________ °C?

   A. 1520 B. 1630 C. 1670 D. 1730...

4. Dilatometer is used for the determination of ______________ of refractories?

   A. Modulus of rupture B. Permanent linear change C. Resistance to CO attack D. RUL...

5. Faster rate of drying of moulded refractories results in high _____________ of refractories?

   A. Green strength B. Voids C. Shrinkage D. Both B. and C....

6. Refractoriness of a typical silica brick corresponds to Segar cone number, ’32’, which is equivalent to a temperature of _____________ °C?

   A. 1380 B. 1520 C. 1710 D. 1915...

7. Test piece for determination of RUL of a refractory is heated in a/an____________________?

   A. Oxidising atmosphere B. Reducing atmosphere C. Electric furnace D. Neutral atmosphere...

8. Si percentage in silica refractories used in the walls of coke oven is about______________________?

   A. 45 B. 60 C. 80 D. 95...

9. Cold crushing strength of refractories depends upon its_________________?

   A. Composition B. Texture C. Firing temperature D. All A., B. and C....

10. 10 to 30% magnesite is added to Chromite to produce chrome-magnesite refractories. Magnesite addition is mainly done to improve the _____________ of Chromite?

    A. Spalling resistance B. Refractoriness C. Crushing strength D. Resistance to slag...