List of top Chemical, Thermal and Polymer Engineering Questions asked in Common University Entrance Test

When the damping coefficient is equal to 1 for a second-order system, then
A. both the roots will be equal
B. both the roots will be real
C. both the roots will be complex
D. both the roots will be unequal

In the McCabe-Thiele diagram for binary distillation, vertical feed line represents ......., and horizontal feed line represents ............ feed.

In a closed-loop system, the process to be controlled is an integrating process with a transfer function \( \frac{1}{25} \). The controller proposed to be used is an integral controller with transfer function \( \frac{1}{T4s} \). When a step change in the set point is applied to such a closed system, the controlled variable will exhibit:

Routh test criterion:
A is applicable only to those systems with polynomial characterizatic equation
B. does not prove any information about the actual location of roots
C. is applicable only to those systems with non-polynomial characterizatic equation
D. Gives full information about the actual location of roots

Strain gauge rosettes are used when the direction of:

Routh test cannot be used to test the stability of a control system containing:

The first-order thermometer used has a time constant of 50 s. If it is subjected to a sinusoidal input cycling at 0.002 Hz, then the time lag produced in the instrument will be:

An asset is purchased at a cost of Rs. 5000. It has no salvage value at the end of its life of 10 years. Its book value at the end of 5 years using the straight-line method will be:

A production equipment costs Rs. 2,00,000. Its salvage value is Rs. 20,000. The expected return is Rs. 50,000 per annum. The corporate taxes are taken as 40

Capitalized cost comparison method is used for comparing alternatives having:

A company spends a considerable amount on publicity to promote sales. This expenditure in a break-even chart is shown below the:

Bleaching of paper pulp is done by:

An additional step in the manufacture of paper from bagasse as compared to that from bamboo is:

Sugar is leached from sugar beets with:

The grading of nitrogenous fertilizers is based on:

Strength of sulphuric acid can be measured by:

XLPE is the trade name of

Higher holdup of solids in the rotary dryer results in:

HETP is numerically equal to HTU only when the operating line:

Flash distillation is used at a large scale in:

In the absorption of a solute gas from a mixture containing inerts in a solvent, it has been observed that the overall gas transfer coefficient is nearly equal to the individual gas film transfer coefficient. It may therefore be concluded that:

In a small column, local efficiency is equal to Murphree efficiency, and in a large column, local efficiency is:

Heat transfer takes place according to:

When a longitudinal baffle is placed across the shell, the shell-side fluid is forced to pass through the heat exchanger:

Which of the following is a continuous filter?