Ultimate Guide to Prepare Free API API-936 Exam Questions and Answer
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NEW QUESTION 12
The length of metal fiber is
- A. 30 or 40mm
- B. 10 or 15mm
- C. None of the above
- D. 19mm or 25mm
Answer: D
NEW QUESTION 13
Brick, tile, fired shapes and fused cast shapes are
- A. refractory fiber
- B. all above
- C. shaped refractory
- D. unshaped refractory
Answer: C
NEW QUESTION 14
The formation of slag takes place by chemical action and fusion at furnace operating temperature in the way of
- A. In the refining of metals by substances such as lime added for the purpose of affecting or aiding the refining
- B. By chemical reaction between refractories and fluxing agents such as coal ash, or between two different types of refractories
- C. In smelting operation, through the combination of a flux, such as limestone, with the gangue or waste portion of the ore
- D. All of the above
Answer: C
NEW QUESTION 15
Refractories chemically and physically stable at
- A. Average temperatures
- B. High temperatures
- C. None of the above
- D. Low temperatures
Answer: B
NEW QUESTION 16
Alumina - silica refractories containing 45% or more alumina, materials used in their production include diaspore, bauxite, gibbsite, kyanite, sillimanite, alusite, and fused alumina (artificial corundum) is called
- A. high alumina refractories
- B. fire clay refractory
- C. insulating refractories
- D. all of the above
Answer: A
NEW QUESTION 17
Hex mesh supplied in flexible rolls and ready fit to a curved surfaces is called
- A. Hexalt anchor
- B. Flexmesh
- C. Hexcel
- D. All of the above
Answer: B
NEW QUESTION 18
Fiber concentrations typically range is
- A. 1 - 4 wt percent
- B. Any of the above
- C. 1 - 2 wt percent
- D. 1 - 3 wt percent
Answer: A
NEW QUESTION 19
To compose a sample for the modulus of rupture test from an equivalent number of refractory shapes, the specimen should be
- A. At least three
- B. At least four
- C. At least five
- D. At least two
Answer: C
NEW QUESTION 20
In API RP 936, the referenced ASTM standard procedure for cold crushing strength and modulus of rupture is
- A. C181 - 91
- B. C 133 - 97
- C. None of the above
- D. C704 - 01
Answer: B
NEW QUESTION 21
1 solid black is the color of the stripe for the alloy material
- A. 0
- B. 1
- C. 304L
- D. None of the above
Answer: A
NEW QUESTION 22
As per ASTM C- 704, for the erosion tests, silicon carbide grit is to be used by
- A. One time
- B. Three-time
- C. Two time
- D. None of the above
Answer: A
NEW QUESTION 23
Refractory failure mechanisms are.
- A. Erosion and corrosion
- B. All of the above
- C. Overheating and chemical attack
- D. Thermal shock and mechanical abuse
Answer: B
NEW QUESTION 24
A separation between adjoining parts of a refractory lining that allows small expansive movements, such as those caused by thermal change is known as
- A. Expansion joint
- B. Thermal expansion
- C. None of the above
- D. Thermal conductivity
Answer: A
NEW QUESTION 25
Heating the new refractory too rapidly will cause
- A. Structural deterioration
- B. Explosive spalling
- C. Chemical attack
- D. None of the above
Answer: B
NEW QUESTION 26
Compositions of ground refractory materials develop a strong bond at air ambient temperatures by virtue of chemical reactions within the binder phase that is usually activated by water additions. These refractories include cement and phosphate bonded castables is called:
- A. Heat setting refractories
- B. Air and heat setting refractory
- C. None of the above
- D. Air setting refractories
Answer: D
NEW QUESTION 27
Pre-turn around planning means
- A. At least 6 months prior to the turnaround
- B. At least 12 months prior to the turnaround
- C. Any of the above
- D. At least 8 months prior to the turnaround
Answer: A
NEW QUESTION 28
Refractories whose major constituent is lime, magnesia, or both and which may react chemically with acid refractories, acid slags, or acid fluxes at a high temperature is known as
- A. Natural refractories
- B. None f the above
- C. Acid refractories
- D. Basic refractories
Answer: D
NEW QUESTION 29
Metallic anchor made from rod or bar and usually used for dual layer linings that are configured in
- A. U shape
- B. V shape
- C. Y shape
- D. All of the above
Answer: C
NEW QUESTION 30
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