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

Related Mcqs:

1. Ordinary mercury in glass thermometer is used for measuring temperature upto 120°C. However, for measuring higher temperature upto __________ °C, thermometer is made by filling nitrogen under pressure above the mercury, which stops the evaporation of mercury and reduces the chance of broken thread of mercury?

   A. 250
   B. 350
   C. 550
   D. 700

2. Working principle of mercury in glass thermometer is based on the ______________ of mercury with increase in temperature?

   A. Increase of pressure
   B. Increase of thermal conductivity
   C. Volumetric expansion
   D. Differential linear expansion

3. Small furnace draught is accurately measured by an inclined tube manometer, in which the manometric liquid used most commonly is __________________?

   A. Water
   B. Carbon tetrachloride
   C. Paraffin
   D. Ethylene glycol

4. 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

5. A mercury thermometer cannot be used to measure the temperature below the freezing point of mercury, which is _____________ °C?

   A. -38.9
   B. -11.9
   C. -60.9
   D. -80.9

6. Mercury thermometer is commonly used for low temperature measurement. The freezing point and boiling point of mercury are respectively _____________ °C?

   A. – 39 and 350
   B. – 51 and 439
   C. – 79 and 395
   D. – 10 and 425

7. Maximum differential pressure in liquid manometer is ______________ psi?

   A. 20
   B. 30
   C. 40
   D. 50

8. A manometer measures the _____________ pressure?

   A. Atmospheric
   B. Absolute
   C. Gauge
   D. None of these

9. 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

10. 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