Related Mcqs:

1. Dilute wine was used as a thermometric liquid initially to develop temperature scale. First empirical temperature scale developed was the _____________ scale?

   A. Kelvin
   B. Centigrade
   C. Fahrenheit
   D. Reaumer

2. 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)

3. Temperature measuring instruments are standardised mostly with _____________ points of pure substances?

   A. Melting
   B. Boiling
   C. Both A. & B.
   D. Neither A. nor B.

4. Which of the following does not figure in the list of seven substances selected for international temperature scale ?

   A. Ice (F.P) and steam (B.P)
   B. Oxygen and sulphur (B.P)
   C. Antimony and silver (F.P)
   D. Zinc (B.P) and mercury (F.P)

5. Thermodynamic Celsius scale of temperature measurement is________________?

   A. Defined on the basis of melting point of ice and evaporation temperature of water vapor
   B. Defined on the basis of melting point of ice and condensation temperature of water vapor
   C. Having an interval of 100° between ice point to steam point
   D. Both B. and C.

6. Normal mercury thermometer can be used to measure a temperature of about 300°C. However, its maximum temperature measurement range can be increased upto about 500°C by__________________?

   A. Filling nitrogen under pressure in the stem
   B. Increasing the diameter of the tube
   C. Using steel tube in place of glass tube
   D. Accounting for the tube expansion

7. Vapour actuated pressure spring thermometer does not require ambient temperature compensation. Ambient temperature compensation is provided in gas or liquid expansion pressure spring thermometer by__________________?

   A. Making the volume of thermometer bulb as large as conveniently possible
   B. Reducing the volume of the capillary to a minimum
   C. Reducing the volume of the receiving element to a minimum
   D. All A , B & C.

8. Working principle of mercury in glass thermometer is based on volumetric expansion of mercury with increase in temperature. Which of the following undergoes minimum volumetric expansion for a given temperature change ?

   A. Water
   B. Mercury
   C. Methyl alcohol
   D. Carbon-tetrachloride

9. 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.

10. 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