A tachometer is a device used to measure:

Q. A tachometer is a device used to measure:
Answer: speed of rotation
Notes: A tachometer is an instrument measuring the rotation speed of a shaft or disk, as in a motor or other machine. The device usually displays the revolutions per minute (RPM).

Question Source: 📚This question has been sourced from GKToday's "40000+ GK / General Studies MCQs for SSC & State PCS Exams" App Exclusive Course in GKToday Android Application which provides more than 40K General Knowledge and General Studies questions with explanations asked in all Competitive Exams of India. Download the app here.

📌 Question Number: 40 in Discoveries & Inventions in the above course in App.

This Question is Also Available in:

हिन्दी ಕನ್ನಡ