Calculate the frequency if the number of revolutions is 300 per second and the paired poles are 50.
Correct answer: A. 15 kHz
- A. 15 kHz
- B. 150 kHz
- C. 1500 kHz
- D. 150 Hz
Explanation
Correct option is A.We know thatF = p × nF = 50 × 300F = 1500 Hz = 15 kHzAs this is a numerical thus only one option is correct.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Simple Harmonic Motion
Simple harmonic motion is oscillation in which acceleration is directly proportional to displacement and directed toward the equilibrium position. Work includes displacement, velocity, acceleration, phase, period, frequency, amplitude and energy, with applications to springs and simple pendulums. The restoring force and the conditions for SHM distinguish it from general periodic motion.
Practise Waves
1,281 free Waves MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Physics questions like this
Physics is on 16 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Simple Harmonic Motion questions
Under the action of the restoring force:
An object is undergoing simple harmonic motion. Its time period is T and total energy is E. The amplitude of vibration is reduced to half. What is the new time period and total energy of the system?
An angular velocity of 60 revolutions per minute is the same as:
The potential energy at the mean position of a pendulum is:
A vibrating string has a little sound. However, when attached to a board the sound has a greater intensity. This is because?
A first harmonic stationary sound wave is produced in the air of the cylinder, which is half-filled with water. More water is added to the cylinder, and now first harmonic stationary wave is produced with a different frequency. What is the change in frequency and nature of displacement in air at the surface of the water?