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Question: A 10 Ω resistor is placed in series with a coil of self resistance RL and inductance L and a purr capacitor 'C' across a 50 V variable frequency supply. The current is maximum and has value of 1 A when the frequency is 500 Hz. At this frequency, voltage across The capacitor is 300 V.
Calculate
(i) capacitance of the capacitor
(ii) resistance and Inductance of the coil
(iii) Power consumed in the circuit
(iv) Voltage across the resistor and the coil.
where vsat is a relatively constant velocity. Determine the trans-conductance of such a device.
Derive an expression for the ratio of the proportionality constants and plot the distribution of the m = 0 TE mode for a slab waveguide with parameters
calculate the sending and receiving end voltages, power flows and transmission losses.- Increase, the demand to 1000 amps and recalculate the values.
A disc of reduced semiconducting rutile crystal 2 cm in diameter and 2 mm thick is heated in air for 10 s at 300°C. After cooling, circular electrodes, 1 cm in diameter, are applied symmetrically to the two major surfaces.
A radio channel has a bandwidth of 10 KHz and a SNR of 15 dB. What is the maximum data rate that can be transmitted: (a) Using any system (b) Using a code with 64 possible states
For transistors in the circuit in given figure, the parameters are: hFE = 50, VBE (on) = 0.7 V, and VA = ∞. - Using nodal analysis, determine the closed-loop current gain Aif = io/is.
We wish to build a machine with as great a flux density as possible while avoiding excessive saturation in the core. What would be a reasonable maximum flux density for this core?
The soil characteristics are given in the figure. Field monitoring indicated that the foundation settlement was 19 mm during the first 12 months.
a. Determine the voltage regulation, the load resistance, the armature resistance, and the developed torque at full load. b. The speed of the generator is decreased to 1200 rpm, and the load resistance is unchanged.
Repeat (a), but this time hold the slot width to 0.5?x and vary the slot length from ?y to 10?y. How does the transmitted amplitude vary with the slot length?
What is the frequency of the rotor immediately after switching the stator leads?
A semiconductor device is characterized by the idealized energy band diagram in the figure below. It is also known that EG = 1.12eV, ni = 1010 cm-3, and kT = 0.0259 eV. Also, μn = 1345 cm2 V-1 - sec-1 and μp =458cm2V-1-sec-1 atbothx=xa andx=xb.
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