charged droplet travels at a speed of 2.0 x 103 m/s. The field(s) that acts on this droplet is/are a. electrical only b. electrical and magnetic only c. magnetic and gravitational only d. electrical‚ magnetic‚ and gravitational 3. A charged particle experience a magnetic force only when it a. moves in the same direction as the magnetic field b. crosses magnetic field lines c. goes against gravity d. moves against an electric field 4. A proton beam travels at a constant velocity
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Single-phase induction kilowatt hour meter - Construction Single-phase induction kilowatt hour meter - Construction An adjustable copper shading rings are provided on the central limb of the shunt magnet to make the phase angle displacement between magnetic field set up by shunt magnet and supply voltage is approximately 90 degree. The copper shading bands are also called the power factor compensator or compensating loop. The series electromagnet is energized by a coil‚ known as “current” coil which
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it with the calculated value. Secondly the goal was to investigate the relationship between the emf and the frequency of the driving signal. The magnetic field was found to be uniform throughout. For the frequency of 40 Hz‚ the average current was found to be 0.634‚ the experimental magnetic field was found to be 29.21 Gauss while the average magnetic field calculated from the max and minimum values was 31.25 Gauss giving a percent error of 6.53%. V emf was calculated to be 0.03177V and the average
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2.1 Motors use the effect of forces on current-carrying conductors in magnetic fields 2.1.1 The motor effect The motor effect is where a force acts on a current-carrying conductor in a magnetic field. The right hand palm rule is used to find certain properties: fingers point to magnetic field‚ thumb points in DC direction and palm points to direction of the force. 2.1.2 Factors affecting the force acting on the current-carrying conductor Forces are experienced by the electrons in the conductor
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Materials Science Version No. 2.0 Course Prerequisites/ Corequisites/ antirequisites : L T P C 3024 Objectives: To enable the students to understand the nature of different types of materials namely Conducting‚ Semi conducting‚ Dielectrics‚ Magnetic and Superconducting materials. Expected Outcome: This course will be the base to understand the various concepts involved in the applications of materials in Engineering and Technology. Unit 1 Conducting material 10 hours (Description)
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P=(E)(E)/R 6. A magnetic blow out coil in a DC motor controller contactor functions to: Ans: Prevent contact melting 7. The device most commonly utilizing the principle of electromagnetic induction is: Ans: Transformer 8. A current at which a magnetic-type overload relay tends to trip may be decrease by raising the plunger further into the magnetic circuit of the relay.This action will: Ans: Increases magnetic pull on the plunger and
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Required Vocabulary – IB 12 Higher Level Physics and Physical Measurement 1. Fundamental Units – seven basic units of the SI measurement system: kilogram‚ second‚ mole‚ meter‚ ampere‚ Kelvin‚ candela. 2. Derived Units – units that are combinations of fundamental units. These combinations may or may not have a separate name. (eg. 1 kg m/s2 = 1 N) 3. Accuracy - An indication of how close a measurement is to the accepted value (a measure of correctness). 4. Precision - An indication
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Describe the main features of a DC electric motor and the role of each feature Part | Description | Role | Magnet(s) | Either permanent or electromagnetic. Induce a magnetic field and fit around the armature. | The magnets supply the magnetic field which interacts with the current in the armature to produce the motor effect. | Armature | The armature consists of a cylinder of laminated iron mounted on an axle. Often there are longitudinal grooves into which the coils are wound. | The armature
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Why is magnetic flux through closed surface zero while electric flux not? Gauss’ Law for Magnetism The net magnetic flux out of any closed surface is zero. This amounts to a statement about the sources of magnetic field. For a magnetic dipole‚ any closed surface the magnetic flux directed inward toward the south pole will equal the flux outward from the north pole. The net flux will always be zero for dipole sources. If there were a magnetic monopole source‚ this would give a non-zero area integral
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01 uT - 19.99 uT to 19.99 uT. available for high precision magnetic field measurement. 0. 1 uT ≧ 20.0 uT‚ ≦ -20.0 uT. * Using exclusive high sensitivity sensor ( better * Wide application for industrial‚ mechanical‚ material‚ Accuracy ± ( 2 % + 2 mG ) electrical‚ laboratory field to check the material * -1‚000 mG to 1‚000 mG contains magnetic field value. * -100.0 uT to 100.0 uT * DC and AC magnetic field measurement Field Direction Uniaxial. * Wide measure range : ± 3‚000 milligauss
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