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Q. A four-pole dc generator is lap wound with 326 armature conductors. It runs at 650 r/min on full load, with an induced voltage of 252 V. If the bore of themachine is 42 cmin diameter, its axial length is 28 cm, and each pole subtends an angle of 60°, determine the air-gap flux density. (Note that the number of parallel paths is equal to the number of poles for lap windings.)
Q. For the coupled inductors shown in Figure, neglecting the coil resistances, write the volt-ampere relations.
(a) Evaluate whether the sinusoidal signal x(t) = A cos (2πf 0 t + θ) is an energy-type or a power-type signal. (b) Show that any periodic signal is not typically energy type, a
Q. Using K maps, simplify the following Boolean expressions: (a) F = A · ¯ B + A · B (b) F = A · C + C · D + B · C · D (c) F = A·B · ¯ C +B ·C +A·B ·D +B ·C ·D
Question: A DC, separately excited motor is supplied from a 240-V source. When the motor is unloaded, it draws 1A of current from the source. When the motor is loaded, it draws
The problem with a battery charger (say, for portable devices) is that it continues to draw power even after the battery is fully charged thereby wasting electricity. In addition,
Structure of Bipolar junction transistor: A BJT contains three differently doped semiconductor regions that are: emitter region, base region and collector region. These regio
Q. In an RLC series circuit excited by a voltage source v(t), for R = 10 , L = 1 H, and C = 0.1F, determine v(t) if the capacitor voltage vC(t) = 5e -10t V.
Determine about the satellite navigation In motor vehicles system is known as satellite navigation (sat nav). On board computer contains pre-stored road maps. Vehicle's exact
Software Defined Radio (SDR) is an advanced radio technology in which flexibility is achieved in using radio functions such as modulation and demodulation of radio signals are carr
what is phaser diagram?
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