What is a harmonic?

What is a harmonic?
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1 Answer

Answer :

It is an exact multiple of the basic or fundamental frequency.
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Related questions

When measuring harmonic distortion, you set the signal generator to input a 15-kHz test signal. To what frequency should you set the wave analyzer?

Description : When measuring harmonic distortion, you set the signal generator to input a 15-kHz test signal. To what frequency should you set the wave analyzer?

Last Answer : 45 kHz.

What number harmonic is the primary harmonic distortion in magnetic tape recorders?

Description : What number harmonic is the primary harmonic distortion in magnetic tape recorders?

Last Answer : Third-order harmonic.

A recorder’s harmonic-distortion specification reads 2% third harmonic of a 100-kHz signal at 60 ips. What does this mean?

Description : A recorder’s harmonic-distortion specification reads 2% third harmonic of a 100-kHz signal at 60 ips. What does this mean?

Last Answer : The recorder has 2% third-harmonic distortion of a 100-kHz signal at 60 ips.

If the fundamental frequency is 200 megahertz, what is the third harmonic?

Description : If the fundamental frequency is 200 megahertz, what is the third harmonic?

Last Answer : 600 megahertz.

A particle in simple Harmonic Motion while passing through mean position will have a.Maximum kinetic energy and minimum potential energy b.Average kinetic energy and average potential energy c.Minimum kinetic energy and maximum potential energy d.Maximum kinetic energy and maximum e.Minimum kinetic energy and minimum potential energy

Description : A particle in simple Harmonic Motion while passing through mean position will have a.Maximum kinetic energy and minimum potential energy b.Average kinetic energy and average potential energy c. ... energy d.Maximum kinetic energy and maximum e.Minimum kinetic energy and minimum potential energy

Last Answer : a. Maximum kinetic energy and minimum potential energy

The periodic time of a body moving in Simple Harmonic Motion is a.Directly proportional to its angular velocity b.Directly proportional to the weight of the body c.Inversely proportional to the square of angular velocity d.Directly proportional to the momentum of swinging body e.Inversely proportional to the angular velocity

Description : The periodic time of a body moving in Simple Harmonic Motion is a.Directly proportional to its angular velocity b.Directly proportional to the weight of the body c.Inversely proportional to ... d.Directly proportional to the momentum of swinging body e.Inversely proportional to the angular velocity

Last Answer : e. Inversely proportional to the angular velocity

A body in Simple Harmonic Motion will attain maximum velocity when it passes through a.Point of 0.75 amplitude b.Extreme point of the oscillation of L.H.S. c.Point of half amplitude d.Extreme point of the oscillation at R.H.S. e.Mean position

Description : A body in Simple Harmonic Motion will attain maximum velocity when it passes through a.Point of 0.75 amplitude b.Extreme point of the oscillation of L.H.S. c.Point of half amplitude d.Extreme point of the oscillation at R.H.S. e.Mean position

Last Answer : e. Mean position

The moving parts of a machine which weigh 1 tonne perform vertical simple harmonic motion with an amplitude of 2.5 cm and a period of 0.5 sec. The base of the machine weighs 3 tonnes and rests on the ground. Maximum reactions on the ground would be a.3.6 tonnes b.2.4 tonnes c.4.0 tonnes d.4.8 tonnes e.4.4 tonnes

Description : The moving parts of a machine which weigh 1 tonne perform vertical simple harmonic motion with an amplitude of 2.5 cm and a period of 0.5 sec. The base of the machine weighs 3 tonnes and rests on the ground. Maximum ... would be a.3.6 tonnes b.2.4 tonnes c.4.0 tonnes d.4.8 tonnes e.4.4 tonnes

Last Answer : e. 4.4 tonnes

A particle is moving in Simple Harmonic Motion in a simple pendulum with some period of oscillation. Now in order to double the period of oscillation a.The length of pendulum should be quadrupled b.The length of pendulum should be doubled c.The mass of the bob should be halved d.The length of pendulum should be reduced to one fourth e.The mass of the bob should be doubled

Description : A particle is moving in Simple Harmonic Motion in a simple pendulum with some period of oscillation. Now in order to double the period of oscillation a.The length of pendulum should be quadrupled b.The ... length of pendulum should be reduced to one fourth e.The mass of the bob should be doubled

Last Answer : a. The length of pendulum should be quadrupled

A body is executing simple harmonic motion of amplitude 1 cm. Its velocitywhile passing through the central point is 10 mm/sec. Its frequency will be a.2.99 rps b.2.22 rps c.1 rps d.1.59 rps e.1.77 rps

Description : A body is executing simple harmonic motion of amplitude 1 cm. Its velocitywhile passing through the central point is 10 mm/sec. Its frequency will be a.2.99 rps b.2.22 rps c.1 rps d.1.59 rps e.1.77 rps

Last Answer : c. 1 rps

A body is vibrating with simple harmonic motion of aplitude 5 cm frequency 10 vibrations per second. The maximum value of velocity in cm/s will be a.3.14 cm/s b.314 cm/s c.3140 cm/s d.31.4 cm/s e.31400 cm/s

Description : A body is vibrating with simple harmonic motion of aplitude 5 cm frequency 10 vibrations per second. The maximum value of velocity in cm/s will be a.3.14 cm/s b.314 cm/s c.3140 cm/s d.31.4 cm/s e.31400 cm/s

Last Answer : b. 314 cm/s

Thyroid gland is activated by which harmonic for the secretion of thyroxin? -Do You Know?

Description : Thyroid gland is activated by which harmonic for the secretion of thyroxin? -Do You Know?

Last Answer : answer:

A source frequency f gives t beats when sounded with a frequency 200Hz. The second harmonic of same source gives 10 beats when sounded with a source o

Description : A source frequency f gives t beats when sounded with a frequency 200Hz. The second harmonic of same source gives 10 beats when sounded with a source o

Last Answer : A source frequency f gives t beats when sounded with a frequency 200Hz. The second harmonic of same source gives 10 ... Hz` C. `205 Hz` D. `195 Hz`

An open pipe is suddenly closed at one end with the result that the frequency of third harmonic of he closed pipe is found to be higher by 100 Hx than

Description : An open pipe is suddenly closed at one end with the result that the frequency of third harmonic of he closed pipe is found to be higher by 100 Hx than

Last Answer : An open pipe is suddenly closed at one end with the result that the frequency of third harmonic of he closed pipe ... 300 Hz` C. `240 Hz` D. `480 Hz`

An insect of negligible mass is sitting on a block of mass M, tied with a spring of force constant K. The block performs simple harmonic motion with a

Description : An insect of negligible mass is sitting on a block of mass M, tied with a spring of force constant K. The block performs simple harmonic motion with a

Last Answer : An insect of negligible mass is sitting on a block of mass M, tied with a spring of force constant K. The block ... /2 sqrt(k/M)` D. `2A sqrt(k/M)`

What machine shows that harmonic tremors indicate moving magma?

Description : What machine shows that harmonic tremors indicate moving magma?

Last Answer : Feel Free to Answer

In the 1940s jazz underwent a major change. Players began to include more notes in their harmonic palette. For the most part earlier players had stuck to the major and pentatonic scales in their impro?

Description : In the 1940s jazz underwent a major change. Players began to include more notes in their harmonic palette. For the most part earlier players had stuck to the major and pentatonic scales in their impro?

Last Answer : Concluding sentence

In the 1940s jazz underwent a major change. Players began to include more notes in their harmonic palette. For the most part earlier players had stuck to the major and pentatonic scales in their impro?

Description : In the 1940s jazz underwent a major change. Players began to include more notes in their harmonic palette. For the most part earlier players had stuck to the major and pentatonic scales in their impro?

Last Answer : Concluding sentence

The harmonic currents in a power transformer does not cause increase in: a) Secondary voltage b) Core loss c) Copper loss d) Magnetic interference with protective relays

Description : The harmonic currents in a power transformer does not cause increase in: a) Secondary voltage b) Core loss c) Copper loss d) Magnetic interference with protective relays

Last Answer : Ans: A

According to Malthusian theory of population - (1) Population increases in geometric ratio, food supply increases in arithmetic ratio (2) Population increases in arithmetic ratio, food supply increases in geometric ratio (3) Population increases in a harmonic mean, food supply increases in geometric ratio (4) Population increases in a harmonic ratio, food supply increases in a arithmetic ratio

Description : According to Malthusian theory of population - (1) Population increases in geometric ratio, food supply increases in arithmetic ratio (2) Population increases in arithmetic ratio, food supply increases in ... (4) Population increases in a harmonic ratio, food supply increases in a arithmetic ratio

Last Answer : (1) Population increases in geometric ratio, food supply increases in arithmetic ratio Explanation: In his 1798 work, An Essay on the Principle of Population, Malthus ermined the relationship between population ... e. by the repeated addition of a uniform increment in each uniform interval of time).

Which of the following is an example of simple harmonic motion? (1) Earth spinning on its axis (2) Simple pendulum motion (3) Bali bouncing on floor (4) Motion of a ceiling fan

Description : Which of the following is an example of simple harmonic motion? (1) Earth spinning on its axis (2) Simple pendulum motion (3) Bali bouncing on floor (4) Motion of a ceiling fan

Last Answer : (2) Simple pendulum motion Explanation: When a body moves about a mean position in such a way that the acceleration is proportional to the displacement and is always directed towards the mean ... to execute a simple harmonic motion. The motion of a simple pendulum falls under this category.

The motion of a body that repeats itself after a regular interval of time is – (1) a periodic motion (2) a simple harmonic motion (3) an aperiodic motion (4) an oscillatory motion

Description : The motion of a body that repeats itself after a regular interval of time is – (1) a periodic motion (2) a simple harmonic motion (3) an aperiodic motion (4) an oscillatory motion

Last Answer : (1) a periodic motion Explanation: The motion of a body that repeats itself after a regular interval of time is called 'Periodic Motion'. Simple Harmonic Motion is a type of periodic motion where the restoring force is directly proportional to the displacement.

If the driving torque, such as that produced by a diesel engine, creates pulsations when coupled with a synchronous generator operating in parallel; the generator rotor may be periodically pulled ahead or behind its normal position as it rotates. This co A. hunting B. direct coupling C. peaking D. harmonic coupling

Description : If the driving torque, such as that produced by a diesel engine, creates pulsations when coupled with a synchronous generator operating in parallel; the generator rotor may be periodically pulled ahead or behind ... as it rotates. This co A. hunting B. direct coupling C. peaking D. harmonic coupling

Last Answer : Answer: A

A Hertz antenna is operating on a frequency of 2182 kHz and consists of a horizontal wire that is hanged between two towers. What is the frequency of its third harmonic? A. 727 kHz B. 6546 kHz C. 436 kHz D. 6.546 kHz

Description : A Hertz antenna is operating on a frequency of 2182 kHz and consists of a horizontal wire that is hanged between two towers. What is the frequency of its third harmonic? A. 727 kHz B. 6546 kHz C. 436 kHz D. 6.546 kHz

Last Answer : B. 6546 kHz

Harmonic suppressor connected to an antenna. A. Low-pass filter B. High-pass filter C. M-derived filter D. Constant-K

Description : Harmonic suppressor connected to an antenna. A. Low-pass filter B. High-pass filter C. M-derived filter D. Constant-K

Last Answer : A. Low-pass filter

What are the methods of reduction of harmonic content?

Description : What are the methods of reduction of harmonic content?

Last Answer : a. Transformer connections b. Sinusoidal PWM c. Multiple commutation in each cycle d. Stepped wave inverters

What is the seventh harmonic of a 100 MHz quarter wavelength antenna? A. 14.28 MHz B. 107 MHz C. 149 MHz D. 700 MHz

Description : What is the seventh harmonic of a 100 MHz quarter wavelength antenna? A. 14.28 MHz B. 107 MHz C. 149 MHz D. 700 MHz

Last Answer : D. 700 MHz

In modulation technique, which of the following is referred to audible pitch? A. Width B. Frequency C. Harmonic D. Amplitude

Description : In modulation technique, which of the following is referred to audible pitch? A. Width B. Frequency C. Harmonic D. Amplitude

Last Answer : B. Frequency

What are the methods adopted to reduce harmonic torques?

Description : What are the methods adopted to reduce harmonic torques?

Last Answer : The methods used for reduction or elimination of harmonic torques are chording, integral slot winding, skewing and increasing the length of air gap.

The lowest frequency produced by an instrument. A. Harmonic B. Fundamental C. Midrange D. 0 Hz

Description : The lowest frequency produced by an instrument. A. Harmonic B. Fundamental C. Midrange D. 0 Hz

Last Answer : B. Fundamental

Harmonic suppressor connected to an antenna. A. High pass filter B. Low pass filter C. Tank circuit D. M-derived filter

Description : Harmonic suppressor connected to an antenna. A. High pass filter B. Low pass filter C. Tank circuit D. M-derived filter

Last Answer : B. Low pass filter

Lowest frequency produced by a musical instrument. A. Fundamental B. Midrange C. Period D. Harmonic

Description : Lowest frequency produced by a musical instrument. A. Fundamental B. Midrange C. Period D. Harmonic

Last Answer : A. Fundamental

Types of Harmonic oscillator?

Description : Types of Harmonic oscillator?

Last Answer : A5: There are many ways to implement harmonic oscillators, because there are different ways to amplify and filter. Some of the different circuits are: Hartley oscillator Colpitts oscillator Cross- ... crystal oscillator Phase-shift oscillator RC oscillator (Wien Bridge and "Twin-T")

What is Harmonic oscillator?

Description : What is Harmonic oscillator?

Last Answer : The harmonic, or linear, oscillator produces a sinusoidal output. The basic form of a harmonic oscillator is an electronic amplifier with the output attached to an electronic filter, and the ... around the loop, being filtered and re-amplified until it increasingly resembles the desired signal.

Period of simple harmonic motion of a spiral spring or elastic thread is given by A. T = 2π × (extension produced/gravitational field strength) B. T = 2π × (extension produced/√(gravitational field strength)) C. T = 2π × (√(extension produced)/gravitational field strength) D. T = 2π × √(extension produced/gravitational field strength)

Description : Period of simple harmonic motion of a spiral spring or elastic thread is given by A. T = 2π (extension produced/gravitational field strength) B. T = 2π (extension produced/√( ... (extension produced)/gravitational field strength) D. T = 2π √(extension produced/gravitational field strength)

Last Answer : T = 2π × √(extension produced/gravitational field strength)

Due to energy dissipation by viscous forces in air, if simple harmonic variations of a pendulum die away after some time, then oscillation is said to be: A. undamped B. free C. damped D. dependent

Description : Due to energy dissipation by viscous forces in air, if simple harmonic variations of a pendulum die away after some time, then oscillation is said to be: A. undamped B. free C. damped D. dependent

Last Answer : damped

Give the practical applications of simple harmonic motion.

Description : Give the practical applications of simple harmonic motion.

Last Answer : a) Simple harmonic motion of a pendulum was used for the measurement of time. b) Tuning the musical instrument is done with the vibrating tuning form which executes simple harmonic motion. c) ... simple harmonic motion. d) The study of molecules is made with the help of vibration spectrum.

Give example of simple harmonic motion.

Description : Give example of simple harmonic motion.

Last Answer : a) Oscillation of simple pendulum. b) When a tuning fork is hit against a rubber pad, its prongs execute simple harmonic motion. c) When the load is attached to the lower end of a spring suspended from a support is pulled and released, it executes simple harmonic motion.

Define the following with reference to simple harmonic motion. a) Amplitude b) Oscillation c) Time period

Description : Define the following with reference to simple harmonic motion. a) Amplitude b) Oscillation c) Time period

Last Answer : a) The maximum displacement of the particle on either side of the equilibrium position is called amplitude. b) One complete to and fro motion of the particle about its mean position is called oscillation

Define simple harmonic motion and give examples.

Description : Define simple harmonic motion and give examples.

Last Answer : Motion which repeats after regular intervals of time is called simple harmonic motion. Ex: Oscillation of simple pendulum, vibration of a tuning fork.

PERT (Project Evaluation and Review Technique) analysis is based on A. Optimistic time, Pessimistic time and Most likely time B.Pessimistic time, Optional time, Maximum time C.Optimistic time, Efficient time, Most likely time D.Minimax time, Optimistic time and harmonic time

Description : PERT (Project Evaluation and Review Technique) analysis is based on  A. Optimistic time, Pessimistic time and Most likely time  B.Pessimistic time, Optional time, Maximum time  C.Optimistic time, Efficient time, Most likely time  D.Minimax time, Optimistic time and harmonic time

Last Answer : A. Optimistic time, Pessimistic time and Most likely time

A node having twice the frequency of the fundamental is called A. half harmonic B. harmonic C. double harmonic D. triple harmonic

Description : A node having twice the frequency of the fundamental is called A. half harmonic B. harmonic C. double harmonic D. triple harmonic

Last Answer : harmonic

For an under damped harmonic oscillator, resonance A Occurs when excitation frequency is greater than undamped natural frequency B Occurs when excitation frequency is less than undamped natural frequency C Occurs when excitation frequency is equal to undamped natural frequency D Never occurs

Description : For an under damped harmonic oscillator, resonance A Occurs when excitation frequency is greater than undamped natural frequency B Occurs when excitation frequency is less than undamped natural frequency C Occurs when excitation frequency is equal to undamped natural frequency D Never occurs

Last Answer : C Occurs when excitation frequency is equal to undamped natural frequency

The velocity vector in a vector diagram for a harmonic motion A Lags the displacement vector by 180 0 B Lags the displacement vector by 90 0 C Leads the displacement vector by 90 0 D Leads the displacement vector by 180 0

Description : The velocity vector in a vector diagram for a harmonic motion A Lags the displacement vector by 180 0 B Lags the displacement vector by 90 0 C Leads the displacement vector by 90 0 D Leads the displacement vector by 180 0

Last Answer : C Leads the displacement vector by 90 0

The motion of a system executing harmonic motion with one natural frequency is known as _______ A. principal mode of vibration B. natural mode of vibration C. both a. and b. D. none of the above

Description : The motion of a system executing harmonic motion with one natural frequency is known as _______ A. principal mode of vibration B. natural mode of vibration C. both a. and b. D. none of the above

Last Answer : C. both a. and b.

A vibrating system having mass 1kg, a spring of stiffness 1000N/m and damping factor of 0.632 and it is put to harmonic excitation of 10N. Find the amplitude at resonance. A 0.079 B 7.9C 0.056 D 0.00791

Description : A vibrating system having mass 1kg, a spring of stiffness 1000N/m and damping factor of 0.632 and it is put to harmonic excitation of 10N. Find the amplitude at resonance. A 0.079 B 7.9C 0.056 D 0.00791

Last Answer : D 0.00791

The velocity vector in a vector diagram for a harmonic motion A Lags the displacement vector by 180 0 B Lags the displacement vector by 90 0 C Leads the displacement vector by 90 0 D Leads the displacement vector by 180 0

Description : The velocity vector in a vector diagram for a harmonic motion A Lags the displacement vector by 180 0 B Lags the displacement vector by 90 0 C Leads the displacement vector by 90 0 D Leads the displacement vector by 180 0

Last Answer : C Leads the displacement vector by 90 0

A weight of 50 N is suspended from a spring of stiffness 4000N/m and subjected to a harmonic force of magnitude 60N and frequency 60 Hz. what will be the static displacement of the spring due to maximum applied force A. 0.015m B. 0.15 m C. 15 m D. 150m

Description : A weight of 50 N is suspended from a spring of stiffness 4000N/m and subjected to a harmonic force of magnitude 60N and frequency 60 Hz. what will be the static displacement of the spring due to maximum applied force A. 0.015m B. 0.15 m C. 15 m D. 150m

Last Answer : B. 0.15 m

When a body moves with simple harmonic motion, the product of its periodic time and frequency is equal to A. Zero B. One C. π/2 D. 2π

Description : When a body moves with simple harmonic motion, the product of its periodic time and frequency is equal to A. Zero B. One C. π/2 D. 2π

Last Answer : B. One

A single degree of freedom spring-mass system is subjected to a harmonic force of constant amplitude. For an excitation frequency of √3k/m , the ratio of the amplitude of steady state response to the static deflection of the spring is __________ A. 0.2 B. 0.5 C. 0.8 D. None of the above

Description : A single degree of freedom spring-mass system is subjected to a harmonic force of constant amplitude. For an excitation frequency of √3k/m , the ratio of the amplitude of steady state response to the static deflection of the spring is __________ A. 0.2 B. 0.5 C. 0.8 D. None of the above

Last Answer : B. 0.5