63402. Inductance is indirectly proportional to the square of the number of turns, the permeability, and the cross-sectional area of the core.
63403. Inductors add in parallel.
63404. Energy is stored by an inductor in an electrostatic field.
63405. The term choke is more commonly used in connection with an inductor used to block off high frequencies.
63406. An inductance of 0.08 H is larger than
63407. A 240 H inductor is equivalent to a
63408. A 2 mH, a 3.3 mH, and a 0.2 mH inductor are connected in series. The total inductance is
63409. A 5 mH, a 4.3 mH, and a 0.6 mH inductor are connected in parallel. The total inductance is
63410. The voltage across a coil when di/dt = 20 mA/s and L = 8 H is
63411. In 1907 Ayyankali founded
63412. The novel ‘Premamrutam’was written by
63413. The drama ‘Balabalam’was written by
63414. The ‘Al Amin’ started publication from Calicut in October 1924 under the editorship of
63415. What is the reluctance of a material that has a length of 0.07 m, a cross-sectional area of 0.014 m2, and a permeability of 4,500 Wb/At × m?
63416. A coil of wire is placed in a changing magnetic field. If the number of turns in the coil is decreased, the voltage induced across the coil will
63417. What is the flux density when the flux is 5.5 Wb and the cross-sectional area is 6 × 10–3 m2?
63418. The unit for reluctance is
63419. If the steel disk in a crankshaft position sensor has stopped with the tab in the magnet's air gap, the induced voltage
63420. There is 900 mA of current through a wire with 40 turns. What is the reluctance of the circuit if the flux is 400 Wb?
63421. A basic one-loop dc generator is rotated at 90 rev/s. How many times each second does the dc output voltage peak (reach maximum)?
63422. What is the flux density in a magnetic field in which the flux in 0.1 m2 is 600 Wb?
63423. The unit for permeability is
63424. What is the magnetomotive force in a 75-turn coil of wire when there are 4 A of current through it?
63425. The direction of a magnetic field within a magnet is
63426. When the north poles of two bar magnets are brought close together, there will be
63427. The ability of a material to remain magnetized after removal of the magnetizing force is known as
63428. The voltage induced across a certain coil is 200 mV. A 120 resistor is connected to the coil terminals. The induced current is
63429. The induced voltage across a stationary conductor in a stationary magnetic field is
63430. An electromagnetic field exists only when there is
63431. When a solenoid is activated, the force that moves the plunger is
63432. What is the magnetomotive force (mmf) of a wire with 8 turns carrying three amperes of current?
63433. If a loop in a basic dc generator suddenly begins rotating at a faster speed, the induced voltage
63434. Lenz's law defines the polarity of the induced voltage.
63435. A magnetic field is made up of flux lines.
63436. Hysteresis is the number of lines of force per unit area in a magnetic field.
63437. If a conductor is moved back and forth at a constant rate in a constant magnetic field, the voltage in the conductor will reverse polarity.
63438. Materials with a low retentivity do not retain a magnetic field very well.
63439. Electromagnetic induction is the force that produces a magnetic field.
63440. The tesla is the unit of magnetic flux.
63441. Ampere-turn is the unit of magnetomotive force (mmf).
63442. A relay is an electromagnetically controlled mechanical device in which electrical contacts are opened or closed by a magnetizing current.
63443. Reluctance in a magnetic circuit is analogous to current in an electrical circuit.
63444. When the speed at which a conductor is moved through a magnetic field is increased, the induced voltage
63445. The induced voltage across a coil with 250 turns that is located in a magnetic field that is changing at a rate of 8 Wb/s is
63446. For a given wirewound core, an increase in current through the coil
63447. If the cross-sectional area of a magnetic field increases, but the flux remains the same, the flux density
63448. When the current through the coil of an electromagnet reverses, the
63449. Who was the first President of Nair Service Society
63450. As per Indian standards,only-------------welding shall be done for all joints in stainless steel for construction of a milk silo
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