The response of two tanks of same size and resistance in series is __________________?

Related Mcqs:

1. 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?

   A. Tank 1
   B. Tank 2
   C. Tank 3
   D. Tank 4

2. Response of a system to a sinusoidal input is called _____________ response?

   A. Impulse
   B. Unit step
   C. Frequency
   D. None of these

3. Response of a linear control system for a change in set point is called __________________?

   A. Frequency response
   B. Transient response
   C. Servo problem
   D. Regulator problem

4. Platinum resistance thermometer is the international standard for temperature measurement between __________________?

   A. Triple point of hydrogen and freezing point of antimony
   B. 13.81°K to 903.9°K
   C. Both A. and B.
   D. Neither A. nor B.

5. Bode diagram are generated from output response of the system subjected to which of the following input ?

   A. Impulse
   B. Step
   C. Ramp
   D. Sinusoidal

6. The frequency response of a dynamic element shows a constant magnitude ratio at all frequencies. The element exhibits a negative phase shift at all frequencies. The absolute value of the phase shift increases linearly with frequency. The element has the transfer function ?

   A. e-ηS
   B. (T1S + 1)/(T2S + 1)
   C. (T1S/(T2S + 1)
   D. (T1S + 1)/(T2S

7. For increased speed of response of an expansion pressure spring thermometer, the thermometer bulb should have a__________________?

   A. Large area but small mass
   B. High thermal conductivity
   C. Small specific heat
   D. All A , B & C

8. Phase lag of the frequency response of a second order system to a sinusoidal forcing function______________?

   A. Is 30°
   B. Is 90° at the most
   C. Approaches 180° asymptotically
   D. Is 120°

9. Thermal well made of _____________ gives the fastest speed of response, while measuring temperature by thermocouples?

   A. Steel
   B. Vycor (a glass)
   C. Nichrome
   D. Inconel

10. A first order system with a time constant of 1 min is subjected to frequency response analysis. At an input frequency of 1 radian/min, the phase shift is______________?

    A. 45°
    B. -90°
    C. -180°
    D. -45°