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

Related Mcqs:

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

   A. Load
   B. Manipulated
   C. Controlled
   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. Which of the following fluid flow measuring devices can measure the largest flow rate ?

   A. V-notch
   B. Rotameter
   C. Orificemeter
   D. Weir

6. In an exothermic chemical reactor, the manipulated variable is the flow rate of_______________?

   A. Coolant
   B. Reactants
   C. Product
   D. None of these

7. Flow rate of those fluids which are insensitive to changes in their density, viscosity or flow velocity profile can be best measured by a ________________?

   A. Magnetic flowmeter
   B. Pitot tube
   C. Flow nozzle type flowmeter
   D. Turbine flowmeter

8. 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)

9. Mercury manometer (U-tube type) exemplifies a ______________ order system?

   A. Zero
   B. First
   C. Second
   D. Third

10. Which of the following is not a variable area flow meter ?

    A. Piston type meter
    B. Rotameter
    C. Magnetic flow meter
    D. Orifice and tapered plug meter