Manometer is device for measuring
Try it first: pick an option, then read the explanation.
Correct answer: D. Pressure
Asked in SSC JE 2014, Morning
Detailed Explanation
A manometer balances a column of fluid against another fluid column or applied force to determine fluid pressure or pressure differences.
1. Core definition:
A manometer is an instrument that uses a column of liquid to measure the pressure of a fluid (liquid or gas).
2. Other fluid measurement devices:
- Density: Measured using a hydrometer, pycnometer, or oscillating U-tube densitometer.
- Velocity: Measured using a Pitot tube, current meter, or laser Doppler velocimeter.
- Discharge: Measured using a venturimeter, orifice meter, flow nozzle, or weir.
Why “Pressure” Is Correct
By standard engineering definition, a manometer is designed and utilized specifically for the measurement of fluid pressure.
Why the Other Options Are Wrong
- A. Density: Fluid density is measured using a hydrometer or pycnometer.
- B. Velocity: Fluid velocity is measured using a Pitot tube or anemometer.
- C. Discharge: Flow discharge is measured using a venturimeter, orifice meter, or weir.
Key Point
A manometer is a device used for measuring fluid pressure.
Key Concepts for Students
- Simple manometers measure pressure at a single point relative to atmosphere.
- Differential manometers measure the difference in pressure between two points.
- Micro-manometers measure extremely small pressure differences with high precision.
Practice more: this is question 33 in Measurement of Pressure MCQs – Part 3. Try the whole set and check every answer instantly.