In a shell and tube heat exchanger, the inlet temperature of heating/cooling fluid is the ____________ variable?

Related Mcqs:

1. In a shell and tube heat exchanger, the outlet temperature of heating/cooling fluid is the _____________ variable?

   A. Load
   B. Manipulated
   C. Controlled
   D. None of these

2. In a shell and tube heat exchanger, the flow rate of heating/cooling fluid is the ______________ variable?

   A. Load
   B. Controlled
   C. Manipulated
   D. None of these

3. Continuous shell temperature measurement in a liquid-liquid heat exchanger is done by a __________________?

   A. Thermocouple
   B. Resistance thermometer
   C. Mercury in glass thermometer
   D. Vapor pressure thermometer

4. 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________________?

   A. Q0(T0 – T) = Ac . h (dT/dt)
   B. Q0T0 – QT = Ac . h (dT/dt)
   C. Q(T0 – T) = Ac . h (dT/dt)
   D. Q(T0 – T) = Ac . (dTH/dt)

5. The ____________ of the fluid contained in the temperature sensing element (i.e., bulb) of filled system thermometers changes with change in temperature ?

   A. Pressure
   B. Volume
   C. Viscosity
   D. All A., B. and C.

6. Temperature control of an exothermic chemical reaction taking place in a CSTR is done with the help of cooling water flowing in a jacket around the reactor. The types of valve and controller action to be recommended are________________?

   A. Air to open valve with the controller direct acting
   B. Air to close valve with the controller indirect acting
   C. Air to open valve with the controller indirect acting
   D. Air to close valve with the controller direct acting

7. In a single tank system, the transfer function of _____________ to inlet flow rate is 1/(TS+1)?

   A. Outlet flow rate
   B. Level
   C. Both A. & B.
   D. Neither A. nor B.

8. In a single tank system, the transfer function of level to inlet flow rate is__________________?

   A. R/TS
   B. R/(TS + 1)
   C. 1/TS
   D. None of these

9. 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_________________?

   A. (Q/P) e-(Q/R)S/(TdS + 1)
   B. (Q/R) e-TdS/(Q/P) (S + 1)
   C. (Q/P) e-TdS/(Q/R) (S + 1)
   D. (Q/R) e-(P/Q)S/(TdS + 1)

10. The temperature of tempering oil baths maintained at 400°C during heat treatment of steel is measured by a/an _____________ thermocouple?

    A. Chromel-alumel
    B. Iron-constantan
    C. Platinum-platinum/rhodium
    D. None of these