Real API API-936 Exam Questions Study Guide
Updated and Accurate API-936 Questions for passing the exam Quickly
NEW QUESTION 49
For fire clay and some high alumina materials, the most commonly used index of refractoriness is known as:
- A. Refractoriness
- B. Refractoriness under load
- C. Pyrometric cone equivalent
- D. None of the above
Answer: C
NEW QUESTION 50
The terminology for testing refractory that was sampled during installation in order to confirm that they meet specified physical property standards is called
- A. Both of the above
- B. As - installed testing
- C. Physical property test
- D. None of the above
Answer: B
NEW QUESTION 51
Modulus of rupture test for castable refractories, the test specimen shall be
- A. 9 x 2 x 2 in (228 x 51 x 51mm)
- B. None of the above
- C. 6 x 2 x 2 in
- D. 8 x 2 x 2 in
Answer: A
NEW QUESTION 52
Refractory packing requirements, the weight in the bag, shall not deviate by more than
- A. ±1%
- B. ± 2%
- C. ± 4%
- D. ± 3%
Answer: B
NEW QUESTION 53
As installed testing is the terminology for testing refractory that was sampled during installation in order to confirm that they meet specified.
- A. Chemical property standards
- B. Physical property standards
- C. None of the above
- D. Both as above
Answer: B
NEW QUESTION 54
Spalling of layers from the hot surface of a refractory lining is called
- A. Crumbling
- B. Spalling
- C. Sheeting
- D. Erosion
Answer: B
NEW QUESTION 55
A condition describing a refractory lining that is soft and friable
- A. Slumping
- B. Plunky
- C. None of the above
- D. Bloating
Answer: B
NEW QUESTION 56
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. Basic refractories
- C. None f the above
- D. Acid refractories
Answer: B
NEW QUESTION 57
Compositions of ground refractory materials which require relatively high temperatures for the development of an adequate bond (commonly called the ceramic bond) is called
- A. air and heat setting refractories
- B. none of the above
- C. heat setting refractories
- D. air setting refractories
Answer: C
NEW QUESTION 58
The most commonly used binder for refractory concrete is
- A. calcium aluminate cement
- B. cements
- C. silicates
- D. all of the above
Answer: A
NEW QUESTION 59
The air pressure to blast the 1000 g of size graded silicon carbide grain for abrasion resistance test should be
- A. 450 KPa
- B. 400 KPa
- C. 448 KPa (65 PSi)
- D. None of the above
Answer: C
NEW QUESTION 60
All the samples for the CCs test must be dried at 220 to 230?C (105 to 110?C) for
- A. 12 hrs (overnight)
- B. 20 hrs (overnight)
- C. 24 hrs (overnight)
- D. 18 hrs (overnight)
Answer: C
NEW QUESTION 61
Forms (types) of refractory
- A. Unshaped
- B. Refractory (ceramic) fibers
- C. Shaped
- D. All above
Answer: D
NEW QUESTION 62
The increase in linear dimensions and volume which occurs when materials are heated and which is counterbalanced by contraction of equal amounts when the materials are cooled.
- A. Thermal expansion
- B. Thermal conductivity
- C. None of the above
- D. Thermal shock
Answer: B
NEW QUESTION 63
The term that describes the condition of pre-set refractory in which gravitational forces cause it to lose its desired shaped is called
- A. Slumping
- B. Punky
- C. None of the above
- D. Bloating
Answer: A
NEW QUESTION 64
The surface of a refractory section not exposed to the source of heat
- A. Hot face
- B. None of the above
- C. Cold face
- D. Smooth face
Answer: C
NEW QUESTION 65
A combination of refractory grain and suitable bonding agent that, after the addition of a proper liquid, is generally poured into place to form a refractory shape or structure which becomes rigid because of chemical action is called
- A. mortar
- B. all of the above
- C. castable
- D. ceramic modules
Answer: C
NEW QUESTION 66
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