Chemical Engineering Basics MCQ Questions & Answers | Chemical Engineering

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71.
Corona discharge is related to the operation of a/an

A. Induction motor

B. Electrostatic precipitator

C. Fast breeder reactor

D. Magneto hydrodynamic generator (MHD)

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72.
Thermal equivalent of electrical power in practical calculation is __________ kcal/kWh.

A. 746

B. 3000

C. 1000

D. 550

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73.
Upto the critical radius of insulation, added insulation, will

A. Increase the heat loss

B. Decrease heat loss and will have no effect beyond that

C. Decrease heat flux

D. Reduce convection heat loss compared to conduction heat less

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74.
For grinding of softer materials, the grinding wheel should have __________ grain size.

A. Finer

B. Coarser

C. Medium

D. Any type of

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75.
Chromium molybdenum steel can not be welded using __________ welding.

A. Thermit

B. Electrical resistance

C. Oxy-acetylene

D. Any of these

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76.
Titanium can be easily welded using __________ welding.

A. Submerged arc

B. TIG

C. Shielded metal arc

D. Electroslag

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77.
The most suitable material for die casting is

A. Iron

B. Copper

C. Steel

D. Nickel

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78.
Lead pencil contains

A. Graphite

B. Lead sulphide

C. Lead

D. Both B & C

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79.
The refractory lining of the bottom in a basic electric arc furnace is made of

A. Silica

B. Alumina

C. Magnesia

D. Fireclay

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80.
In TIG welding, thoriated tungsten electrodes are used, because it

A. Has higher current carraying capacity

B. Has better electron emissivity

C. Is stronger than ordinary tungsten

D. Is easy to prepare

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Chemical Engineering Basics MCQ Questions & Answers | Chemical Engineering

71. Corona discharge is related to the operation of a/an

Answer & Solution

72. Thermal equivalent of electrical power in practical calculation is __________ kcal/kWh.

Answer & Solution

73. Upto the critical radius of insulation, added insulation, will

Answer & Solution

74. For grinding of softer materials, the grinding wheel should have __________ grain size.

Answer & Solution

75. Chromium molybdenum steel can not be welded using __________ welding.

Answer & Solution

76. Titanium can be easily welded using __________ welding.

Answer & Solution

77. The most suitable material for die casting is

Answer & Solution

78. Lead pencil contains

Answer & Solution

79. The refractory lining of the bottom in a basic electric arc furnace is made of

Answer & Solution

80. In TIG welding, thoriated tungsten electrodes are used, because it

Answer & Solution

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71.
Corona discharge is related to the operation of a/an

72.
Thermal equivalent of electrical power in practical calculation is __________ kcal/kWh.

73.
Upto the critical radius of insulation, added insulation, will

74.
For grinding of softer materials, the grinding wheel should have __________ grain size.

75.
Chromium molybdenum steel can not be welded using __________ welding.

76.
Titanium can be easily welded using __________ welding.

77.
The most suitable material for die casting is

78.
Lead pencil contains

79.
The refractory lining of the bottom in a basic electric arc furnace is made of

80.
In TIG welding, thoriated tungsten electrodes are used, because it