Chemical Engineering Basics Archives | Page 143 of 151

Uniform ramming of sand in green sand moulding process leads to____________________?

August 20, 2021February 7, 2019 by admin

Uniform ramming of sand in green sand moulding process leads to____________________?

A. Reduced chance of gas porosity
B. Greater dimensional stability of the casting
C. Uniform flow of molten metal into the mould cavity
D. Less sand expansion type of casting defect

____________________ flux is used for the extraction of metal from its self fluxing ores?

August 20, 2021February 7, 2019 by admin

____________________ flux is used for the extraction of metal from its self fluxing ores?

A. No
B. Acid
C. Basic
D. Neutral

Percentage of differential pressure lost in a Venturimeter with a tapering of 15° may be about___________________?

August 20, 2021February 7, 2019 by admin

Percentage of differential pressure lost in a Venturimeter with a tapering of 15° may be about___________________?

A. 1
B. 10
C. 25
D. 50

During decarburising of a plain carbon steel, the thickness of ferrite layer growth is proportional to____________________?

August 20, 2021February 7, 2019 by admin

During decarburising of a plain carbon steel, the thickness of ferrite layer growth is proportional to____________________?

A. Time
B. Square root of time
C. Square of time
D. Cube of time

Property responsible for the talcum powder to cling to the skin is the__________________?

August 20, 2021February 7, 2019 by admin

Property responsible for the talcum powder to cling to the skin is the__________________?

A. Capillary action
B. Adhesion
C. Cohesion
D. Surface tension

Breakeven point represents the condition, when the company runs under no profit no loss condition. In break even analysis, total cost comprises of fixed cost________________?

August 20, 2021February 7, 2019 by admin

Breakeven point represents the condition, when the company runs under no profit no loss condition. In break even analysis, total cost comprises of fixed cost________________?

A. Only
B. Plus variable cost
C. Plus overhead cost
D. Plus selling expenses

Principal alloying elements of cast tool alloys which have very high wear resistance & high temperature strength are ?

August 20, 2021February 7, 2019 by admin

Principal alloying elements of cast tool alloys which have very high wear resistance & high temperature strength are ?

A. Cobalt, chromium & tungsten
B. Cobalt, chromium & nickel
C. Molybdenum, tungsten & chromium
D. Cobalt, zirconium & molybdenum

Which of the, following is not associated with the functioning of a petrol engine ?

August 20, 2021February 7, 2019 by admin

Which of the, following is not associated with the functioning of a petrol engine ?

A. Compression ignition system
B. Spark plug
C. Carburettor
D. Otto cycle

Heating of ferromagnetic materials to a temperature above Curie temperature makes it ________________________?

August 20, 2021February 7, 2019 by admin

Heating of ferromagnetic materials to a temperature above Curie temperature makes it ________________________?

A. Insulator for heat & electricity transmission
B. Ferritic
C. Behave like paramagnetic materials
D. Superconductor

Oxygen cylinders used for autogenous (cutting/welding) purposes are ___________________?

August 20, 2021February 7, 2019 by admin

Oxygen cylinders used for autogenous (cutting/welding) purposes are ___________________?

A. Seamless & made of steel
B. Heat treated before use
C. Made by sand casting
D. Welded steel cylinders