In a forced draft cooling tower, water is cooled from 95 to 80°F by exposure to air with a wet bulb temperature of 70°F. In this case, the

Question

In a forced draft cooling tower, water is cooled from 95 to 80°F by exposure to air with a wet bulb temperature of 70°F. In this case, the

A. Range is 15°F

B. Approach is 10°F

C. Both (A) & (B)

D. Neither (A) nor (B)

Temperature range (T₁ - T₂) = 15°F
Temperature approach (T₂ - t_w) = 10°F
Wet-bulb temperature t_w = 70°F

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D. Duralumin

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A. Made of glass fibre and thermoplastic resins

B. Anisotropic

C. Made of thermosetting resin and glass fibre

D. Both 'b' & 'c'

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A. Casting

B. Cold working

C. Forging

D. Welding

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A. Temperature - entropy

B. Temperature - pressure

C. Enthalpy - entropy

D. Enthalpy-pressure

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__________ of test specimens is not involved in any hardness testing method.

A. Fracture

B. Indentation

C. Wear

D. Scratch

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A. 10^-3

B. 10³

C. 10^-15

D. 10¹⁵

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A. Wrought

B. Tool

C. Alloy

D. Plain carbon

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A. Electrical energy

B. Chemical energy

C. Energy of high velocity electrons

D. Heat generated by friction

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Alloying elements present in Haynes stellite, which has superior performance than high speed steel, are:

A. Nickel, cobalt & chromium

B. Tungsten, chromium & cobalt

C. Manganese, chromium & cobalt

D. Tungsten, molybdenum & nickel

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A. Brine (sea water)

B. Diamond

C. Distilled water

D. Glass

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A.

B.

C.

D.

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A. Final control element

B. On-off control

C. Floating control action

D. None of these

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A. Tensile

B. Fatigue

C. Impact

D. None of these

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A.

B.

C.

D.

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A. Magnesite

B. Chrome

C. Silica

D. Fireclay

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A. Electrochemical deposition

B. Gaseous reduction

C. Atomisation

D. Mechanical attrition

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The elastic strain energy of a unit length of an edge dislocation as compared to that of a screw dislocation is

A. More

B. Equal

C. Less

D. Double

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A. Cyaniding

B. Sherardizing

C. Spheroidising

D. None of these

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A. Partial condensation of steam

B. Vibration of the pipeline

C. High degree of superheat of steam

D. Its exposure to torrential rain

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A. Iron

B. Copper

C. Rubber

D. Nickel

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A. lb_m/lb_f. ft/sec²

B. lb_f/lb_m. ft/sec²

C. ft/sec²

D. lb_m/lb_f. sec²/ft

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A. Boring

B. Counter boring

C. Drilling

D. Enlarging

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Steel rods are normally used for concrete reinforcement because concrete and steel have almost equal

A. Tensile strength

B. Compressive strength

C. Young's modulus

D. Thermal co-efficient of expansion

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A. Proteins

B. Carbohydrates

C. Vitamins

D. Fats

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A. Thermit

B. Electrical resistance

C. Oxy-acetylene

D. Any of these

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A. Elastic limit

B. Deflection value

C. Fatigue resistance

D. None of these

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A. Rain

B. Cold wave

C. Storm

D. Fair weather

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Which of the following metals is not subjected to electrolytic refining/purification?

A. Copper

B. Zinc

C. Tin

D. Aluminium

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A. Ultraviolet rays

B. Infrared rays

C. Cosmic rays

D. X-rays

Discuss this answer

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A. Grease

B. Solid lubricant

C. Animal oils

D. Mineral oils

Discuss this answer

Accepted Answer

C. Both (A) & (B)

In a forced draft cooling tower, water is cooled from 95 to 80°F by exposure to air with a wet bulb temperature of 70°F. In this case, the

Correct Answer :

Show all Chemical Engineering Basics MCQ

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