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The resistance of two coils of a wattmeter are 0.01 ohm and 1000 ohms respectively and both are non-inductive the load current is 20 A and the voltage across the load is 30 V. in one of the two ways of connecting the voltage coil, the error in the reading
The electric field of a uniform plane wave propagating in lossless isotropic medium is E(x,t) = 60(pi)cos(3 10 t + 4x) ay V/m. The magnetic field at point (0,0,0) when t = 0 is 1A/m. The unit of t is second and the unit of x is meter.
A potentiometer is wired is wired to represent a rotational range of 0-180 degree. The potentiometer is supplied with a voltage of 15 VDC. What is the output voltage at 75 degree
A baseband sine wave signal with frequency 4.0 kHz is modulated onto a carrier at 1.050 MHz using DSB-LC AM. What are the frequencies of the sidebands of the RF signal?
Design a series resonant circuit to have a bandwidth of 400 Hz using a coil with a Ql of 20 and a resistance of 2-ohm. Find the values of L and C and the cutoff frequencies
Discuss how can identify which resistances are in series and which ones are in parallel in a series-parallel circuit. How might this affect how you measure current and voltages in the circuit with a digital multimeter
An LVDT (Linear Variable Differential Transformer) is used in an accelerometer to measure seismic-mass displacement. The LVDT and signal-conditioning output is 0.31 mV/mm with a +/- 2 cm maximum core displacement.
The triggering device for an automobile airbag restraint is required to have a reliabil-ity of 95 per cent when tested on an impact test rig. This reliability is to be established at 90 per cent confidence. The test is destructive.
1 A full-wave rectifier is to be designed to produce a peak output voltage of 12 V, deliver 120 mA to the load, and produce an output with a ripple of not more than 5 percent. An input line voltage of 120 V (rms), 60 Hz is available. Consider a bridg..
A fluorescent tube fixture takes 1 ampere when connected to a 120-volt source. A wattmeter in the circuit reads 80 watts. What is the' operating power factor of this unit
If the LSB signal is transmitted through a channel that only introduces a 0.3 ms delay, and the oscillator at the LSB receiver produces a local carrier 2 cos(2 pi fct), determine the receiver output signal y(t).
The power transferred across the air gap of a two-pole induction motor is 24kW. If the electromagnetic power developed is 22kW, find the slip. Calculate the output torque, if the rotational loss at this slip is 400W
A proton moves around a circular path ( radius = 2.0 mm ) in a uniform .25-T magnetic field. what total distance does this proton travel during a 1.0-s time interval ( m= 1.67x10-27 kg = 1.6x10-19 C)
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