Can you help by answering this question?

The FM radio broad cast frequency band (in MHz) is...

12 views
in Electronics Engineering by
The force acting between two magnetic poles is

1 Answer

0 votes
by

The force acting between two magnetic poles is inversely proportional to the square of the distance

Related questions

1 answer 15 views

Which of the statements about the force between two charge is true?  (1) Unlike charges repel each other (2) Like charges attract each other (3) No force exists between two unlike charges (4) A force of repulsion exists between two like charges

asked Apr 9, 2018 in Electrical Engineering by Shimroz123
0 answers 30 views

When the separation between two charges is made four times, the force between them  (a) increases four times (b) decreases four times (c) increases sixteen times (d) decreases sixteen times

asked Apr 9, 2018 in Electrical Engineering by Shimroz123
1 answer 150 views

A single force and a couple acting in the same plane upon a rigid body?

asked Mar 22, 2018 in Engineering Mechanics by Shimroz123
1 answer 23 views

A force acting on a body may?

asked Mar 22, 2018 in Engineering Mechanics by Shimroz123
1 answer 30 views

The coefficient of coupling between two coils is 0.45. The first coil has an inductance of 75 mH and the second coil has an inductance of 105 mH. What is the mutual inductance between the coils?  (1) 3.54 mH (2) 7.88 mH (3) 39.9 mH (4) 189.3 mH

asked Apr 9, 2018 in Electronics Engineering by Shimroz123
1 answer 14 views

Twelve 1 ohm resistances are used as edge to form a cube. The resistance between two diagonally opposite corners of the cube is:  (1) 5/6 ohm (2) 1 ohm (3) 6/5 ohm (4) 3/2 ohm

asked Apr 9, 2018 in Electronics Engineering by Shimroz123
1 answer 34 views

Define the following terms: i) Magnetic flux density, ii) Reluctance, iii) Magneto-motive force, iv) Permeance.

asked Sep 4, 2018 by Shimroz123
1 answer 14 views

Define magnetic lines of force. Show the magnetic lines of force for bar type magnet.

asked Aug 8, 2018 by Quiz
1 answer 16 views

Two non-collinear parallel equal forces acting in opposite direction?

asked Mar 22, 2018 in Engineering Mechanics by Shimroz123
1 answer 23 views

The introduction of interpoles in between the main poles improves the performance of DC machines because: (A) the interpole produces additional flux to augment the torque developed (B) the flux waveform is improved with reduction in harmonics (C) the inequality of air flux on the top and bottom halves of the armature is removed (D) a counter emf is induced in the coil undergoing commutation

asked Apr 11, 2018 in Computer Engineering by Shimroz123
0 answers 14 views

The data recording area between the blank gaps on magnetic tape is called a/an:  (a) record (b) block (c) field (d) database

asked May 23, 2018 in Computer Engineering by Shimroz123
1 answer 15 views

When the north poles of two bar magnets are brought close together, there will be: A. no force B. a downward force C. a force of attraction D. a force of repulsion

asked Apr 12, 2018 in Electrical Engineering by Shimroz123
0 answers 17 views

The transient step response of two systems exhibits same peak time. The dominant poles of the two systems can be represented in s plane along  A) A line parallel to X axis B) A line parallel to Y axis C) A line at an angle to negative real axis D) A semicircle

asked Apr 9, 2018 in Control System by Shimroz123
1 answer 328 views

A trolley wire weighs 1.2 kg per meter length. The ends of the wire are attached to two poles 20 meters apart. If the horizontal tension is 1500 kg find the dip in the middle of the span?

asked Mar 22, 2018 in Engineering Mechanics by Shimroz123
1 answer 11 views

Define magnetic lines of force. Also draw and show magnetic lines of force of a bar type magnet.

asked Sep 4, 2018 by Shimroz123
1 answer 6 views

A field of force can exist only between?

asked Mar 25, 2018 in Basic concepts by Shimroz123
0 answers 20 views

Give the relation between magnetic field strength, magnetic flux density and permeability.

asked Aug 8, 2018 by Quiz
0 answers 11 views

How much is the potential difference between two points if 0.5 J of energy is required to move 0.4 C of charge between the two points?

asked Jul 1 by Shimroz123
0 answers 20 views

The most accurate instrument for measuring phase difference between two signals is (A) X− Y plotter (B) oscilloscope (C) phase sensitive detector (D) electronic counter/timer 

asked Jun 4, 2018 in Electrical Measurements and Instrumentation by Shimroz123
1 answer 13 views

A transmission line is operating with a Phase shift of 80° between two ends. If the load is suddenly increased A) The phase displacement will increase B) The phase displacement will decrease C) The phase displacement will not change D) The surge impedance will increase

asked May 24, 2018 in Electrical Engineering by Shimroz123
1 answer 8 views

In case of split phase motor, the phase shift between currents in the two windings is around  A) 30° B) 70° C) 90° D) 120°

asked May 17, 2018 in Electrical Machine by Shimroz123
1 answer 5 views

The Hamming distance between two code-words is (A) the number of places the code-words are same (B) same as the Euclidean distance between their decimal representation (C) is maximum of the either code-words (B) the number of places the code-words differ

asked May 12, 2018 in Computer Engineering by Shimroz123
1 answer 26 views

When the phase difference between two sinusoidal quantities is 90° they are said to be ______ A) Phase right angle B) Phase quadrature C) Phase sinuright D) None of these

asked Apr 29, 2018 in Electrical Engineering by Shimroz123
0 answers 22 views

The distance between two coil sides which are connected to the same commutator segment is called as  (1) winding pitch (2) back pitch (3) front pitch (4) full pitch

asked Apr 10, 2018 in Electrical Engineering by Shimroz123
0 answers 18 views

Which of the following test is carried out to ensure the sufficient strength of insulation between two or more conductors to avoid leakage between them ?   (a) Testing of insulation resistance between wiring and earth (b) Testing of insulation resistance between conductors (c) Testing of polarity of single phase switch (d) Testing of earth continuity path 

asked Apr 10, 2018 in Electrical Engineering by Shimroz123
1 answer 27 views

Two waves of the same frequency have opposite phase when the phase angle between them is?

asked Mar 24, 2018 in Electrical Engineering by Shimroz123
1 answer 14 views

A rectangular magnet of magnetic moment M is cut into two piece of same length, the magnetic moment of each piece will be

asked Mar 29, 2018 in Electrical engineering materials by Shimroz123
1 answer 43 views

Two parallel conductors are separated by a distance, d carrying a current, I in the same direction. The magnetic field along a line running parallel to the conductors and midway between them is (A) zero (B) proportional to I (C) proportional to d (D) proportional to the permeability of the medium. 

asked Jun 4, 2018 in Electrical Engineering by Shimroz123
0 answers 15 views

Poles which produce high Q factor in active RC filters are  A) On the negative real axis close to origin B) On the negative real axis away from origin C) Complex poles away from imaginary axis D) Complex poles near the imaginary axis

asked Apr 9, 2018 in Electronics Engineering by Shimroz123
0 answers 11 views

If 27 J of energy is expended in moving 3 C of charge between two points, how much voltage is there between those two points? 

asked Jul 1 by Shimroz123
0 answers 10 views

How much energy is expended, in joules, if a voltage of 12 V moves 1.25 C of charge between two points?

asked Jul 1 by Shimroz123
1 answer 31 views

The coefficient of coupling between two air core coils depends on   (A) mutual inductance between two coils only (B) self inductances of the two coils only (C) mutual inductance and self inductances of the two coils (D) none

asked May 16, 2018 in Electrical Engineering by Shimroz123
1 answer 21 views

What will be the phase angle between two alternating waves of equal frequency, when one wave attains maximum value the other is at zero value ?

asked Mar 25, 2018 in Electrical Engineering by Shimroz123
1 answer 15 views

Can the electric field between two positive charges be zero?

asked Mar 14, 2018 in Electrical Engineering by Quiz
1 answer 12 views

A long wire carrying 100 amp is placed in an external magnetic field of 50 gauss. The wire is at right angles to the field.

asked Mar 28, 2018 in Electronics Engineering by Shimroz123
1 answer 14 views

 In thermo-couple instruments, in which of the following is an emf caused if the junction of two wires of dissimilar metals is heated and the free or cold ends are connected to a milli-voltmeter? A) Kelvin effect B) Hot wire effect C) Seebeck effect D) Faraday effect 

asked Jun 17, 2018 in Electronics Engineering by Shimroz123
1 answer 12 views

The condition for parallel operation of two inverters is • Amplitude of voltages should be same. • Frequency of voltages should be same. • Both the voltages should be in same phase. • All the three above.

asked May 14, 2018 in Electronics Engineering by Shimroz123
1 answer 27 views

What is the time response of a system whose poles lie on the right hand side of s-plane? A) Exponentially increasing B) Exponentially decreasing C) Sinusoidal oscillations D) Step response 

asked Jun 18, 2018 in Control System by Shimroz123
1 answer 11 views

Poles are real and negative and equal then the system is _____ damped system   (a) Undamped (b) Underdamped (c) Critically damped (d) Overdamped

asked May 13, 2018 in Control System by Shimroz123
1 answer 35 views

What is the frequency of an alternator which has 2 poles and makes 3600 revolutions per minute? A) 3600 HZ B) 60 Hz C) 120 Hz D) None of these

asked Apr 29, 2018 in Electrical Engineering by Shimroz123
0 answers 15 views

A 50 Hz, 3—phase induction motor has a full load speed of 1440 rpm. The number of poles of the motor is:   (A)4 (8)6 (0)12  (D)8

asked Apr 9, 2018 in Electrical Engineering by Shimroz123

Welcome to electronics2electrical.com here you can ask questions related to electrical, electronics, mechanical, telecommunication, instrumentation, computer, mathematics, physics etc.
Be respectful to all the members. Do not copy and paste the answers from other websites which have copyright content. While asking question give full details about it.

Categories

Most popular tags

power motor dc circuit transformer voltage current used system phase resistance factor synchronous load ac energy induction electric generator series frequency between speed capacitor use electrical meter line difference control type mosfet transmission magnetic plant high single instrument bjt unit source advantages function diode and machine winding field define torque parallel amplifier supply shunt thyristor motors electricity arduino maximum time relay armature problem value on transformers types coil diagram state flow ratio material three formula starting direction theorem method emf operating efficiency digital wave microprocessor test instruments inductance loss measure operation connected signal low applications effect single-phase network temperature working constant losses different law wattmeter measuring compare controlled breaker drive device logic rc full switch flux wire resistivity disadvantages free of materials machines angle force converter conductor transistor gain open protection scr core measurement number bridge principle generators reactance circuits negative the friction iron loop short pole battery conservation steam resistors hysteresis computer using analog lines secondary station gate a rectifier inverter linear induced relays nuclear capacitance basic characteristics design direct work rotor electronics ammeter forces diesel damping rlc connection factors capacitors minimum insulation moving regulation running self systems air fault range main stability quality starter igbt eddy alternator ideal rl average 3-phase plants arc thermal error fuzzy biasing dielectric pressure balanced superposition errors copper rotation feedback impedance measured electronic electrons charge inductive transfer explain start off back curve over solar is three-phase tariff locomotive peak bias zener engineering commutator surge conductors rating universal potentiometer density permanent mechanical transducer capacity memory adc excitation two fuse pure harmonics application semiconductor inductor internal pmmc reaction welding resonance traction permeability breakers rms designed electromagnetic si generation brushes switching capacitive shaded rate 1 distribution resistor methods delta star oscillator reluctance simplification algebra 8085 boolean weston dynamometer insulating strength installation definition fuel heating earth units
...