Q. For the block diagram shown below, the characteristic equation is

View solution

Q. The experimental response of the controlled variable y(t) for a step change of magnitude P in the manipulated variable x(t) is shown below.
The appropriate transfer function of the process is

View solution

Q. The open loop transfer function of a process is given below. In the root locus diagram, the poles will be at

View solution

Q. Water is entering a storage tank at a temperature T₀ and flow rate Q₀ and leaving at a flow rate Q and temperature T. There are negligible heat losses in the tank. The area of cross-section of the tank is A₀. The model that describes the dynamic variation of temperature of water in the tank with time is given as :

View solution

Q. The transfer function of a second order system is

View solution

Q. The Laplace transform of a sinusoidal function (eg; sin at) is represented by the curve

View solution

Q. The transfer function of a first order system is

View solution

Q. The transfer function of a pure dead time system with dead time τd is

View solution

Q. Which of following error integral is considered as the best criterion in controller settings ?

View solution

Q. Pick out the symbol for "locally mounted instrument" in instrumentation diagram.

View solution

Q. Block diagram of a simple standard control system is shown below in the figure. Which of the following statement about the above control system is wrong ?

View solution

Q. Water is flowing through a series of four tanks and getting heated as shown in figure. It is desired to design a cascade control scheme for controlling the temperature of water leaving the tank 4 as there is a disturbance in the temperature of a second stream entering the tank 2. Select the best place to take the secondary measurement for the second loop.

View solution

Q. Which is the symbol for "pneumatic control valve" ?

View solution

Q. Find the ultimate gain and frequency for a proportional controller in the case of a process having the transfer function Gp(s) = 1/(4s + 1)(2s + 1)(s + 1).

View solution

Q. Find the Laplace transform of the following input function shown in figure.

View solution

Q. A control system has the following transfer function. The initial value of the corresponding time function is

View solution

Q. The root locus plot of the roots of the characteristics equation of a closed loop system having the open loop transfer function given below, will have a definite number of loci for variation of K from 0 to ∞. The number of loci is

View solution

Q. What is the Laplace transform of sin t ?

View solution

Q. For the time domain function f(t) = t, the Laplace transform of following equation is given by

View solution

Q. __________ is undesirable in thermocouples used in industries.

View solution