Question:medium
Which of the following device is used to measure the speed of Internal Combustion Engine?
Which of the following device is used to measure the speed of Internal Combustion Engine?
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To remember this, think of "Tacho" which comes from the Greek word for "speed." Just as a speedometer measures linear speed, a Tachometer measures rotational speed.
Updated On: Jul 1, 2026
- Odometer
- Dynamometer
- Tachometer
- Rotameter
Show Solution
The Correct Option is C
Solution and Explanation
1. Defining the Tachometer: A
Tachometer is an instrument designed to measure the rotation speed of a shaft or disk, such as in a motor or other machine. In the context of an IC engine, it measures the revolutions per minute (RPM) of the crankshaft.
2. Types of Tachometers:
• Contact Type: Requires physical contact with the rotating shaft to measure speed.
• Non-Contact (Optical) Type: Uses a laser or light beam and a reflective tape on the shaft to measure speed without physical contact.
3. Functions of Other Devices:
• Odometer: Measures the total distance traveled by a vehicle.
• Dynamometer: Measures the torque and brake power (BP) of an engine, not just its speed.
• Rotameter: A device used to measure the flow rate of a liquid or gas in a closed tube.
Knowing the RPM via a tachometer is essential for calculating power and ensuring the engine operates within its designed safety limits.
Tachometer is an instrument designed to measure the rotation speed of a shaft or disk, such as in a motor or other machine. In the context of an IC engine, it measures the revolutions per minute (RPM) of the crankshaft.
2. Types of Tachometers:
• Contact Type: Requires physical contact with the rotating shaft to measure speed.
• Non-Contact (Optical) Type: Uses a laser or light beam and a reflective tape on the shaft to measure speed without physical contact.
3. Functions of Other Devices:
• Odometer: Measures the total distance traveled by a vehicle.
• Dynamometer: Measures the torque and brake power (BP) of an engine, not just its speed.
• Rotameter: A device used to measure the flow rate of a liquid or gas in a closed tube.
Knowing the RPM via a tachometer is essential for calculating power and ensuring the engine operates within its designed safety limits.
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