List of top Chemical Engineering Questions

Operating profit of a chemical plant is equal to
Out of the following, the depreciation calculated by the ______ method is the maximum.
In a manufacturing industry, breakeven point occurs, when the
The total investment in a project is Rs. 10 lakhs and the annual profit is 1.5 lakhs. If the project life is 10 years, then the simple rate of return on investment is
For a given fluid, as the pipe diameter increases, the pumping cost
The ratio of working capital to total capital investment for most chemical plants (except for non-seasonal based products) is in the range of ______ percent.
Utilities cost in the operation of chemical process plant comes under the
The transfer function for a PID controller is (where, \( \tau_I \) is the integral (reset) time and \( \tau_D \) is the derivative time.)
Transfer function of transportation lag is
For an input forcing function, \( X(t) = 2t^2 \), the Laplace transform of this function is
In a single tank system, the transfer function of level to inlet flow rate is
The closed loop pole of a stable second order system could be
Use of I-control along with P-control facilitates
What is the ratio of output amplitude to input amplitude for a sinusoidal forcing function in a first order system?
U-tube manometer is an example of
Which of the following thermocouples will give the highest output for the same value of hot and cold junction temperature?
An algebraic equation relating the Celsius and Fahrenheit is
The volumetric expansion of a liquid caused by temperature changes is minimum for
A proportional controller with a gain of \( K_c \) is used to control a first order process. The offset will increase, if
A negative gain margin expressed in decibels means a/an _____ system
Rate of solid-state diffusion does not depend on which of the following?
The reaction in which the rate of reaction is a function of rate constant alone is
In autocatalytic reactions
The dispersion model accounts for
According to tanks in series model, the spread of the tracer curve is proportional to