Question: The volume of bulb of a liquid filled thermometer is 1000mm<sup>3</sup> . Its time constant and sensitivity are respectively 300 s and 3.6 mm/°C. if the volume of the bulb is reduced to 500 mm<sup>3</sup>, the sensitivity becomes :
Answer:
MCQ: The volume of bulb of a liquid filled thermometer is 1000mm<sup>3</sup> . Its time constant and sensitivity are respectively 300 s and 3.6 mm/°C. if the volume of the bulb is reduced to 500 mm<sup>3</sup>, the sensitivity becomes :
Correct Answer:
A. 7.2 mm/°C
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Related Questions
- 1. A balloon is fitted with a first order temperature measuring device with time constant of 20 s. it is also fitted with zero order instruments for altitude measurements. It radios back to earth both temperature and altitude signals. The decrease in temperature is 0.02 x°C where x is the altitude in meter. The balloon travels vertically at a speed of 5 m/s. The balloon radios back altitude signal as 3000m. The decrease in temperature radios back to earth is :
- 2. A 2 gm mass is suspended from a single spring. The deflection caused is 5 mm. The natural frequency of the system is :
- 3. In a second order system, the damping factor is 0.65 and the natural frequency is 4 Hz. If the stiffness of spring is halved, the new value of damping factor and natural frequency are:
- 4. In a second order system, the steady state error is 0.02. if both viscous friction constant and spring constant are doubled, the steady error will be :
- 5. In second order system, the frequency of damped oscillations is 18 rad/s. The value of damping factor is 0.866. The natural frequency of oscillations is :
- 6. In a second order system, the peak overshoot is 100%. The value of damping factor is :
- 7. For a second order system, the settling time for ±2% band is _____________Where ξ = damping factor and ω<sub>η</sub> = natural frequency : rad/s.
- 8. In a second order damped system, the value of peak overshoot in per unit terms is :
- 9. A first order thermometer has a time constant of 50 s. it is subjected to a sinusoidal input cycling at 0.002 Hz. The time lag of instrument is :
- 10. In order that first order instrument should indicate an output which is within ±10% of the true value of the output when suspended to a sinusoidal input the product 𝛚Ϯ, where 𝛚 = angular frequency of input and Ϯ time constant of instrument should be :
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