PHYSICS Paper & Solution CBSE-XII-2014 EXAMINATION CAREER POINT
... At intersection point there would be two directions of electric field which is not possible so lines of force ...
... At intersection point there would be two directions of electric field which is not possible so lines of force ...
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... 2) The capacitors C1∼C3 are sufficiently large that the voltages across them are considered to be constant. 3) The ESR of capacitors C1∼C3 and the parasitic resistance of coupled-inductor T1 are neglected. 4) The turns ratio n of the coupled inductorT1winding is equal to N2/N1. The operating princip ...
... 2) The capacitors C1∼C3 are sufficiently large that the voltages across them are considered to be constant. 3) The ESR of capacitors C1∼C3 and the parasitic resistance of coupled-inductor T1 are neglected. 4) The turns ratio n of the coupled inductorT1winding is equal to N2/N1. The operating princip ...
OARS Test for Lesson 4: 4th Grade Science: "To Attract or Not to
... 15. Logan and Seth both constructed an electromagnet. The table above shows the materials used in each. Which statement BEST compares the two magnets? A Logan's electromagnet is stronger than Seth's. B ...
... 15. Logan and Seth both constructed an electromagnet. The table above shows the materials used in each. Which statement BEST compares the two magnets? A Logan's electromagnet is stronger than Seth's. B ...
Illumination Utilization of Electrical Energ 6TH SEMESTER
... METHODS TO MINIMISE ERRORS High permeability nickel iron cores are used for precision current transformers. It has mumtel ( 75 % Nickel, 17 % Fe), hipemik (50 % Fe, 50 % Nickel) are used. These materials have high permeability at low flux densities, therefore these materials are commonly used. The ...
... METHODS TO MINIMISE ERRORS High permeability nickel iron cores are used for precision current transformers. It has mumtel ( 75 % Nickel, 17 % Fe), hipemik (50 % Fe, 50 % Nickel) are used. These materials have high permeability at low flux densities, therefore these materials are commonly used. The ...
Topic 2 - Sciwebhop.net
... (a) The heating effect of an electric current is given by H = I2R where I = current, R = resistance. If the power generated from a power station is 150 kW at a voltage of 275 kV, calculate the current in the cable. ...
... (a) The heating effect of an electric current is given by H = I2R where I = current, R = resistance. If the power generated from a power station is 150 kW at a voltage of 275 kV, calculate the current in the cable. ...
Physics XII Imp Questions Answers from other Units
... transmission wires. Further a stepdown transformer is used to decrease the alternating voltage at substation before distributing electrical energy for domestic use. (ii) The two sources of energy loss in a transformer : (1) Copper loss is the energy loss in the form of heat in copper coils of a tra ...
... transmission wires. Further a stepdown transformer is used to decrease the alternating voltage at substation before distributing electrical energy for domestic use. (ii) The two sources of energy loss in a transformer : (1) Copper loss is the energy loss in the form of heat in copper coils of a tra ...
Electromagnetic Induction
... (a) A curent from A to B is increasing in magnetude. What is the direction of induced current, if any in the loop shown in Fig. (b) If inslead of current it is an electron, what will happen ? Answer : (a) When current in the wire AB increases, the flux linked with the loop (which is out of the page) ...
... (a) A curent from A to B is increasing in magnetude. What is the direction of induced current, if any in the loop shown in Fig. (b) If inslead of current it is an electron, what will happen ? Answer : (a) When current in the wire AB increases, the flux linked with the loop (which is out of the page) ...
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... lower voltage obtained from solar modules to higher voltage required by the ship service loads. In a typical photovoltaic system only step-up /boost converter is used due to which the converter has to operate in extreme duty ratio, resulting in increase of switching losses and thus decreasing the ov ...
... lower voltage obtained from solar modules to higher voltage required by the ship service loads. In a typical photovoltaic system only step-up /boost converter is used due to which the converter has to operate in extreme duty ratio, resulting in increase of switching losses and thus decreasing the ov ...
FAN2001/FAN2002 1A High-Efficiency Step-Down DC-DC Converter F
... transient is also minimized due to active regulation during turn on of the N-channel rectifier switch. The device stays in sleep mode until the output voltage falls below the low threshold. The FAN2001/FAN2002 enters the PWM mode as soon as the output voltage can no longer be regulated in PFM with c ...
... transient is also minimized due to active regulation during turn on of the N-channel rectifier switch. The device stays in sleep mode until the output voltage falls below the low threshold. The FAN2001/FAN2002 enters the PWM mode as soon as the output voltage can no longer be regulated in PFM with c ...
MAX767 5V-to-3.3V, Synchronous, Step-Down Power-Supply Controller ________________General Description
... into a tightly regulated 3.3V output. Two key features set this device apart from similar, low-voltage step-down switching regulators: high operating frequency and all N-channel construction in the application circuit. The 300kHz operating frequency results in very small, lowcost external surface-mo ...
... into a tightly regulated 3.3V output. Two key features set this device apart from similar, low-voltage step-down switching regulators: high operating frequency and all N-channel construction in the application circuit. The 300kHz operating frequency results in very small, lowcost external surface-mo ...
Inductor
An inductor, also called a coil or reactor, is a passive two-terminal electrical component which resists changes in electric current passing through it. It consists of a conductor such as a wire, usually wound into a coil. When a current flows through it, energy is stored temporarily in a magnetic field in the coil. When the current flowing through an inductor changes, the time-varying magnetic field induces a voltage in the conductor, according to Faraday’s law of electromagnetic induction, According to Lenz's law the direction of induced e.m.f is always such that it opposes the change in current that created it. As a result, inductors always oppose a change in current, in the same way that a flywheel oppose a change in rotational velocity. Care should be taken not to confuse this with the resistance provided by a resistor.An inductor is characterized by its inductance, the ratio of the voltage to the rate of change of current, which has units of henries (H). Inductors have values that typically range from 1 µH (10−6H) to 1 H. Many inductors have a magnetic core made of iron or ferrite inside the coil, which serves to increase the magnetic field and thus the inductance. Along with capacitors and resistors, inductors are one of the three passive linear circuit elements that make up electric circuits. Inductors are widely used in alternating current (AC) electronic equipment, particularly in radio equipment. They are used to block AC while allowing DC to pass; inductors designed for this purpose are called chokes. They are also used in electronic filters to separate signals of different frequencies, and in combination with capacitors to make tuned circuits, used to tune radio and TV receivers.