49701. Watt's law states the relationships of power to energy.
49702. The watt is the unit of power.
49703. A resistor normally opens when it burns out.
49704. Energy equals power multiplied by time.
49705. A battery is one type of power supply that converts chemical energy into electrical energy.
49706. A 33 half-watt resistor and a 330 half-watt resistor are connected across a 12 V source. Which one(s) will overheat?
49707. When the pointer of an analog ohmmeter reads close to zero, the resistor being measured is
49708. In 0.025 W, there are
49709. A certain appliance uses 350 W. If it is allowed to run continuously for 24 days, how many kilowatt-hours of energy does it consume?
49710. A power supply produces a 0.6 W output with an input of 0.7 W. Its percentage of efficiency is
49711. Protection of children from sexual offenses act came in to force on
49712. In August 2012 the Govt.of Kerala started the deceased donor transplantation programme captioned
49713. Atma Vidya Sangam in 1917 was founded by
49714. ’Samatva Samajam’was founded by
49715. Who was the editor of ‘Mitavadi’Calicut
49716. A sine wave voltage is applied across an inductor. When the frequency of the voltage is decreased, the current
49717. Two 10 H inductors are in parallel and the parallel combination is in series with a third 10 H inductor. What is the approximate total reactance when a voltage with a frequency of 7 kHz is applied across the circuit terminals?
49718. An ohmmeter is connected across an inductor and the pointer indicates zero ohms. The inductor is
49719. Two inductors, L1 and L2, are in parallel. L1 has a value of 25 H and L2 a value of 50 H. The parallel combination is in series with L3, a 20 H coil. The entire combination is across an ac source of 60 Vrms at 300 kHz. The total rms current is
49720. An inductor, a 1 k resistor, and a switch are connected in series across a 6 V battery. At the instant the switch is closed, the inductor voltage is
49721. The winding resistance of a coil can be increased by
49722. An inductance of 0.43 mH is smaller than
49723. An inductor and a resistor are in series with a sine wave voltage source. The frequency is set so that the inductive reactance is equal to the resistance. If the frequency is increased, then
49724. The current through a 120 mH coil is changing at a rate of 150 mA/s. The voltage induced across the coil is
49725. When the current through an inductor decreases, the amount of energy stored in the electromagnetic field
49726. Three 15 mH inductors are in series. The total inductance is
49727. An 18 V power supply is connected across a coil with a winding resistance of 180 . Current flow in the coil is
49728. A switch, a 220 resistor, and a 60 mH inductor are in series across a 20 V battery. What is the current through the inductor two time constants after the switch is closed?
49729. A 320 H coil is in series with a 3.3 k resistor. How long does it take for current to build up to its full value?
49730. Five inductors are connected in series. The lowest value is 8 μH. If the value of each inductor is twice that of the preceding one, and if the inductors are connected in order of ascending values, the total inductance is
49731. The inductance of an iron-core coil decreases if
49732. The following coils are in parallel: 75 H, 40 H, 25 H, and 15 H. The total inductance is approximately
49733. When the current through an inductor is cut in half, the amount of energy stored in the electromagnetic field
49734. The permeability of a core material is an indication of the ability of the material to establish a magnetic field.
49735. XL is directly proportional to frequency and inductance.
49736. An induced voltage is produced as a result of a dc voltage.
49737. Faraday's law states that relative motion between a magnetic field and a coil induces a voltage across the coil.
49738. Inductance is the property of an inductor that produces an opposition to any change in current.
49739. All coil cores are made of iron.
49740. Inductance is indirectly proportional to the square of the number of turns, the permeability, and the cross-sectional area of the core.
49741. Inductors add in parallel.
49742. Energy is stored by an inductor in an electrostatic field.
49743. The term choke is more commonly used in connection with an inductor used to block off high frequencies.
49744. An inductance of 0.08 H is larger than
49745. A 240 H inductor is equivalent to a
49746. A 2 mH, a 3.3 mH, and a 0.2 mH inductor are connected in series. The total inductance is
49747. A 5 mH, a 4.3 mH, and a 0.6 mH inductor are connected in parallel. The total inductance is
49748. The voltage across a coil when di/dt = 20 mA/s and L = 8 H is
49749. Who became the first Indian to swim across the English Channel?