Turn Ratio Is 1.25. The Step-up Transformer Operates At 230 V And Current Through Secondary Is 2 A. Then, Current In Primary Is
Sally
3 Years Ago
Contribute & Test Your Skills
- Unit, Dimension & Measurement
- Motion In One Dimension
- Thermodynamics
- Work, Energy & Power
- Rotational Motion
- Gravitation
- Laws of Motion
- Properties of Solids & Liquids
- Electronic Devices
- Kinetic Theory of Gases
- Wave Motion
- Communication Systems
- Current Electricity & Heating Effect
- Magnetic Effects of Current & Magnetism
- Electromagnetic Induction & Alternating Currents
- Electromagnetic Waves
- Optics Photometry
- Transmission of Heat
- Electrostatics
- Atomic Structure
- Mechanical Properties of Fluids
- Thermal Properties of Matter
- Circular Motion
- Projectile Motion
- Friction
- Properties of Bulk Matter
- Surface Tension
- Simple Harmonic Motion
- Capacitor
- Alternating Current
- Electron, Photon & X-Ray
- Nuclear Physics
- Valve Electronics
- Optical Instrument
- Reflection of Light
- Refraction of Light
- Wave Optics
- Mathematics In Physics
Popular Questions
- in a series lcr circuit, r =200 and the voltage and the
- The turn ratio of a transformer is 1 : 2. An electrolytic DC cell of emf 2 V is connected to its primary. The output voltage acros..
- A cylindrical bar magnet is kept along the axis of a circular coil. If the magnet is rotated about its axis,then
- What should be the value of self inductance of an inductor that should be connected to 220 V, 50 Hz supply, so that a maximum curr..
- A solenoid of inductance 2 H carries a current 1 A. What is the magnetic energy stored in a solenoid ?
- The magnetic susceptibility of a paramagnetic substance at -73 degree C is 0.0060, then its value at -173 degree C will be
- The magnetic flux through a circuit of resistance R changes by an amount ΔΦ in time Δt
- A step-down transformer, transforms a supply line voltage of 2200 V into 220 V. The primary coil has 5000 turns. The efficiency an..
- a square metal wire loop of side 10 cms
- A straight strip has magnetic moment M. If bent as a semicircle, the magnetic moment of the strip will be
- A conducting circular loop is placed in a uniform magnetic field 0.04 T with its plane perpendicular to the magnetic field
- In an AC generator, a coil with N turns, all of the same area A and total resistance R, rotates with frequency w in a magnetic fie..
- A coil having an area 2m2 is placed in a magnetic field
- A bar magnet is placed upright on a floor
- The magnetic flux linked with a coil of N turns of area of cross section A held with its plane parallel to the field B is
- A transformer has an efficiency of 80 per. It is connected to a power input of 5 kW at 200 V. If the secondary voltage is 250 V, t..
- A coil Having 500 square loops each of side 10cm
- A step-down transformer is used on a 1000 V line to deliver 20 A at 120 V at the secondary coil. If the efficiency of the transfor..
- According to phenomenon of mutual inductance
- A copper disc of radius 0.1 m is rotated about its centre with 20 rev/s in an uniform magnetic field of 0.1 T with its plane perpe..
- Turn ratio is 1.25. The step-up transformer operates at 230 V and current through secondary is 2 A. Then, current in primary is
- an inductor
- In 0.1s, the current in a coil increases from 1 A to 1.5 A. If inductance of coil is 60 mH, then induced current in external resis..
- A six pole generator with fixed field excitation developes an emf of 100 V, when operating at 1500 rpm. At what speed must it rota..
- Magnetic flux of 10 u Wb is linked with a coil, when a current of 2mA flows through it. What is the self inductance of the coil ?
- A square loop of side 22cm is converted into circular loop in
- A paramagnetic liquid is taken in a U-tube and arranged so that, one of its limbs is kept between pole pieces of the magnet. The l..
- The figure shows three circuits with identical batteries, inductors and resistances. Rank the circuits according to the currents t..
- an lcr circuit is equivalent to a damped pendulum.in an LCR
- The north pole of a long horizontal bar magnet is being brought closer
- Two concentric coils each of radius equal to
- The time period of a freely suspended bar magnet in a field is 2s. It is cut into two equal parts along its axis, then the time pe..
- A solenoid of inductance 2 H carries a current 1 A. What is the magnetic energy stored in a solenoid ?
- A copper ring is held horizontally and a bar magnet is dropped through the ring with its lenth along the axis of the ring
- The flux linked with a circuit is given by
- A transformer is used to light a 100 W and 110 V lamp from a 220 V mains. If the main current is 0.5 A, the efficiency of transfor..
- A transformer rated at 10 kW is used to connect a 5 kV transmission line to a 240 V circuit. The ratio of turns in the windings of..
- According to Lenzs law of electromagnetic induction
- A step-down transformer has 50 turns on secondary and 1000 turns on primary winding. If a transformer is connected to 220 V and 1 ..
- A rectangular, a square, a circular and an elliptical loop
