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1.

Brick, tile, fired shapes and fused cast shapes are

 
 
 
 

2.

Forms (types) of refractory

 
 
 
 

3.

Fused silica aggregate is used as a raw material in a castable providing

 
 
 
 

4.

Materials having refractory properties which form a refractory body when bonded into a conglomerate mass by a matrix is called

 
 
 
 

5.

For fire clay and some high alumina materials, the most commonly used index of refractoriness is known as:

 
 
 
 

6.

In ceramics, the property of resistance to melting, softening, or deformation at high temperature is called.

 
 
 
 

7.

Refractories chemically and physically stable at

 
 
 
 

8.

Refractories means

 
 
 
 

9.

The functions of refractories include resistance to other destructive influences such as abrasion, pressure, chemical attack, and or rapid changes in temperature is called.

 
 
 
 

10.

Which function of refractories is to resist temperature?

 
 
 
 

11.

Castable, gunning mixes, ramming mixes, plastics, and mortars are

 
 
 
 

12.

Blanket, Module, Bulk paper, rope, and vacuum formed shaped are:

 
 
 
 

13.

Based on-screen analysis, the size of Alumina – silicate aggregate in typical modern castable is

 
 
 
 

14.

Based on screen analysis the fines (cement, fumed silica, fine alumina) in typical modern castable is

 
 
 
 

15.

The most commonly used binder for refractory concrete is

 
 
 
 

16.

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

 
 
 
 

17.

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:

 
 
 
 

18.

Compositions of ground refractory materials which require relatively high temperatures for the development of an adequate bond (commonly called the ceramic bond) is called

 
 
 
 

19.

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

 
 
 
 

20.

A high alumina mineral usually consists of rounded concretionary grains embedded in clay-like mass and is believed to consist essentially of alumina trihydrate (Al2O3 H2O) and alumina hydrate (Al2O3 H2O) in varying proportions is called

 
 
 
 

21.

Commercially on calcined basis bauxite must contain at least

 
 
 
 

22.

A natural or synthetic mineral theoretically consisting solely of alumina (Al2O3), specific gravity 4.00 – 4.02, melting point 3720˚ F. (2050˚ C) Hardness 8.8 is called

 
 
 
 

23.

The selected compression test section of the specimen for the CCs test shall be free from

 
 
 
 

24.

The test specimen of castable refractory for cold crushing strength shall be

 
 
 
 

25.

In API RP 936, the referenced ASTM standard procedure for cold crushing strength and modulus of rupture is

 
 
 
 

26.

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

 
 
 
 

27.

Refractories containing a substantial amount of silica which is reactive with basic refractories, basic slags, or basic fluxes at high temperatures are known as

 
 
 
 

28.

Cristobalite is an important constituent of

 
 
 
 

29.

A group of impure magnesium silicate minerals that occur in a fiberous form is known as

 
 
 
 

30.

A group of rock minerals having nearly perfect cleavage in one direction and consisting of thin elastic plates and the most common varieties are muscovite and biotite is called

 
 
 
 

31.

The air pressure to blast the 1000 g of size graded silicon carbide grain for abrasion resistance test should be

 
 
 
 

32.

Mechanical wearing away of the surfaces of refractory bodies in service by washing action of moving liquid or gases is called

 
 
 
 

33.

A separation between adjoining parts of a refractory lining that allows small expansive movements, such as those caused by thermal change is known as

 
 
 
 

34.

The standard test method for abrasion resistance of refractory materials at room temperature is

 
 
 
 

35.

As per ASTM C- 704, for the erosion tests, silicon carbide grit is to be used by

 
 
 
 

36.

To compose a sample for the modulus of rupture test from an equivalent number of refractory shapes, the specimen should be

 
 
 
 

37.

Modulus of rupture test for castable refractories, the test specimen shall be

 
 
 
 

38.

For modules of rupture test of brick and shapes, the preferred test specimen shall be standard

 
 
 
 

39.

To compose a sample for the CCS test from an equivalent number of refractory shapes the specimen should be

 
 
 
 

40.

All the samples for the CCs test must be dried at 220 to 230˚C (105 to 110˚C) for

 
 
 
 

41.

The property of matter by virtue of which heat energy is transmitted through particles in contact.

 
 
 
 

42.

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.

 
 
 
 

43.

The exposure of a material or body to a rapid change in temperature which may have a deleterious effect

 
 
 
 

44.

Refractory failure mechanisms are.

 
 
 
 

45.

An internal component used for the separation of solids from flue or product gas in a fluid coking unit is called

 
 
 
 

46.

Enclosure inside the top head of a reactor or regenerator vessel which supports the cyclones and in which gases exiting the cyclone outlets are collected is called

 
 
 
 

47.

Section of transfer line in which flow is in an upward direction is called

 
 
 
 

48.

A metallic anchor made from rod or bar stock that is configured in a V-shape is called

 
 
 
 

49.

The color of stripe for Inconel 600 alloy material of metallic anchor is

 
 
 
 

50.

A metallic anchor, usually V-stud which has a foot-shaped configuration at the base to aid weld attachment to the shell is called.

 
 
 
 

51.

The vessel in which cracking reaction occurs or is completed and product gases are separated from coke and/or catalyst particulate is called

 
 
 
 

52.

The color of stripe for 304L alloy material of metallic anchor is

 
 
 
 

53.

The welding method utilizing an arc-welding machine in conjunction with a timer and a gun is called

 
 
 
 

54.

1 solid black is the color of the stripe for the alloy material

 
 
 
 

55.

Colour coding does not require for anchor alloy of

 
 
 
 

56.

The most common sizes in thickness for hex mesh are

 
 
 
 

57.

A typical example of hexalt anchor is

 
 
 
 

58.

Hex mesh supplied in flexible rolls and ready fit to a curved surfaces is called

 
 
 
 

59.

A metallic anchor used to attach ceramic anchors to the casing or shall of a processing unit is

 
 
 
 

60.

Metallic anchor made from rod or bar and usually used for dual layer linings that are configured in

 
 
 
 

61.

The vessel in which coke and residual hydrocarbons are burned off the catalyst and the flue gas is then separated from the catalyst is called

 
 
 
 

62.

Section of transfer line in which flow is in a downward direction is called

 
 
 
 

63.

Refractory lined pipe used for the transport of hot particulate medium and gases between process vessels is called

 
 
 
 

64.

The vessel downstream of the reactor used to separate different product fractions is called

 
 
 
 

65.

As per API recommended practice 936, the standard test method for reheat change of refractory brick is

 
 
 
 

66.

API 936, the standard test method for the workability index of fire clay and high alumina plastic refractories are

 
 
 
 

67.

API 936, the standard test method for abrasion resistance of refractory materials at room temperature is

 
 
 
 

68.

API 936 documentation should content

 
 
 
 

69.

Testing frequency for material qualification of refractory for erosion service requires

 
 
 
 

70.

Testing frequency for material qualification of refractory for other services requires

 
 
 
 

71.

Fiber concentrations typically range is

 
 
 
 

72.

For air-setting phosphate bonded, erosion-resistant refractories mixing, the mixer’s paddles, and bowls shall be

 
 
 
 

73.

Applicator qualification for plastic thick layer, the test panel with an applied lining thickness and anchorage shall be

 
 
 
 

74.

Applicator qualification for thin layer erosion resistant lining, each applicator shall pack a test panel of size.

 
 
 
 

75.

Refractory cast into a mock-up may be stripped and visually inspected after a minimum curing of

 
 
 
 

76.

Gunning test panels are constructed with removable backs as required for

 
 
 
 

77.

Test panels for pneumatic gunning are inclined above the horizontal at an angle of

 
 
 
 

78.

The standard size of a fabricated test panel for pneumatic gunning qualification is

 
 
 
 

79.

The terminology for testing refractory that was sampled during installation in order to confirm that they meet specified physical property standards is called

 
 
 
 

80.

Arrange for testing at either an independent laboratory or the manufacturer’s plant is

 
 
 
 

81.

The effective diameter of metal fiber is

 
 
 
 

82.

The length of metal fiber is

 
 
 
 

83.

Additives used to facilitate moisture removal of refractory linings during dry out are called

 
 
 
 

84.

As installed testing is the terminology for testing refractory that was sampled during installation in order to confirm that they meet specified.

 
 
 
 

85.

The surface of a refractory section not exposed to the source of heat

 
 
 
 

86.

The surface of a refractory section exposed to the source of heat

 
 
 
 

87.

Heating the new refractory too rapidly will cause

 
 
 
 

88.

The loss of fragmented refractories from the face of the refractory structure, through cracking and rupturing which results in the exposure of the original inner portion of the refractory lining is called

 
 
 
 

89.

Spalling of layers from the hot surface of a refractory lining is called

 
 
 
 

90.

The application of monolithic refractories by means of air placement guns is

 
 
 
 

91.

Packing of chemical setting refractories should have mechanical protection by

 
 
 
 

92.

Refractory packing requirements, the weight in the bag, shall not deviate by more than

 
 
 
 

93.

Pre-turn around planning means

 
 
 
 

94.

Refractories that are resistant to chemical attack by both acid and basic slags, refractories, or fluxes at high temperature is

 
 
 
 

95.

A refractory materials, stiffer than plastic, that cannot be extruded but has suitable properties to permit ramming into place to form a monolithic structure

 
 
 
 

96.

A moldable refractory material that can be extruded and has a level of workability that permits it to be pounded into place to form a monolithic structure

 
 
 
 

97.

The destructive chemical reaction between refractories and external agencies at high temperatures, resulting in the formation of a liquid is called

 
 
 
 

98.

The formation of slag takes place by chemical action and fusion at furnace operating temperature in the way of

 
 
 
 

99.

A condition describing a refractory lining that is soft and friable

 
 
 
 

100.

The term that describes the condition of pre-set refractory in which gravitational forces cause it to lose its desired shaped is called

 
 
 
 

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