Related Questions

In normal conditions, the period for sludge digestion, is
A 10 days
B 20 days
C 30 days
D 60 days
For satisfactory working of a sludge digestion unit, the pH range of digested sludge should be maintained as
A 4.5 to 6.0
B 6.5 to 8.0
C 8.5 to 10.0
D 10.5 to 12.0
The value of work index does not change materially from one equipment to another. If the value of work index determined for close circuit grinding is Wi, then the same for open circuit grinding will be
A 0.5 Wi
B Wi
C 1.34 Wi
D 3.34 Wi
Sludge volume index is defined as the ratio of
A Percentage of sludge by volume to percentage of suspended solids by weight
B Percentage of sludge by volume to percentage of total solids by weight
C Percentage of suspended solids by weight to percentage of sludge by volume
D Percentage of total solids by weight to percentage of sludge by volume
The United Nations Human Development Index takes Index takes " into account life expectancy, education, as well as income per person.
A into account life expectancy, education, as well as income per person
B life expectancy, education, as well as income per person into account
C into account life expectancy and education, as well as income per person
D into account life expectancy, and education, and income per person
For a two stage compressor, if index of compression for higher stage is greater than index of compression for lower stage, then the optimum pressure as compared to ideal case will
A Increase
B Decrease
C Remain unaffected
D Other factors control it
Diesel index.(an alternative index for expressing the quality of diesel) is
A Determined by using a test engine
B Not related to aniline point
C Equal to cetane number plus 3
D All of the above
According to maximum normal stress theory, the maximum normal stress in the shaft is
A $$\frac{1}{2}\sqrt {{\sigma ^2} \times 4{\tau ^2}} $$
B $$\sqrt {{\sigma ^2} \times 4{\tau ^2}} $$
C $$\frac{1}{2}\left( {\sigma + \sqrt {{\sigma ^2} \times 4{\tau ^2}} } \right)$$
D $$\sigma + \sqrt {{\sigma ^2} \times 4{\tau ^2}} $$
When a body is subjected to a direct tensile stress (σ) in one plane, then maximum normal stress occurs at a section inclined at _________ to the normal of the section.
A 0°
B 30°
C 45°
D 90°
When a body is subjected to a direct tensile stress ($$\sigma $$) in one plane, then normal stress on an oblique section of the body inclined at an angle $$\theta $$ to the normal of the section is
A $$\sigma \cos \theta $$
B $$\sigma {\cos ^2}\theta $$
C $$\sigma \sin\theta $$
D $$\sigma {\sin ^2}\theta $$

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