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A diode detector is used to detect an amplitude modulated wave of 60% modulation by using a condenser of capacity 250 pico farad in parallel with a load resistance 100 kilo ohm. Find the maximum modulated frequency which could be detected by it. - physics 20130 AnswerGate-20161 AnswerBring out the differences between amplitude modulation and frequency modulation .1 AnswerThe maximum frequency of a force signal in Hz below the natural frequency within its useful midband range of measurement, for which the gain amplitude is less than 1.05 approximately is: GATE-Instrumentational-Engineering-20131 AnswerIn a full wave rectifier, the input is from 30-0-30 V transformer. The load and diode forward resistances are 100 Ω and 10 Ω respectively. Calculate the average voltage, DC output power, ac input power, rectification efficiency and p0 AnswerA harmonic oscillator is oscillating with a frequency of 3 Hz. .Physics CBSE class 11 20160 AnswerThe circuit below incorporates a permanent magnet moving coil milli–ammeter of range 1 mA having a series resistance of 10kΩ. Assuming constant diode forward resistance of 50Ω a forward diode drop of 0.7 V and infinite reve1 AnswerA hot plate of an electric oven connected to a 220 V line has two resistance coils A and B, each of 24 Ω resistance, which may be used separately, in series, or in parallel. What are the currents in the three cases? -CBSE Physics 1 AnswerExplain zener diode voltage regulator circuit with no load and with load.1 AnswerJudge the equivalent resistance when the following are connected in parallel – (a) 1 Ω and 106 Ω, (b) 1 Ω and 103 Ω, and 106 Ω. -CBSE Physics 1 AnswerConsider a uniform plane wave with amplitude E of 10V / m and 1.1GHz frequency travelling in air, and incident normally on a dielectric medium with complex relative permittivity and permeability as shown in the figure.GATE EC 20151 AnswerA sinusoidal signal of 2 kHz frequency is applied to a delta modulator. The sampling rate and step-size of the delta modulator are 20,000 samples per second and 0.1V, respectively. To prevent slope overload, the maximum amplitude of the sinusoidal s1 AnswerA band limited signal with a maximum frequency of 5 kHz is to be sampled.According to the sampling theorem, the sampling frequency in kHz which is not valid is GATE-Instrumentational-Engineering-20131 AnswerThe differential amplifier is connected as shown in the figure(b) above to a single strain gage bridge. Let the strain gage resistance vary around its no load resistance R by ±1%. GATE-Instrumentational-Engineering-20131 AnswerAn electric lamp of 100 Ω, a toaster of resistance 50 Ω, and a water filter of resistance 500 Ω are connected in parallel to a 220 V source. What is the resistance of an electric iron connected to the same source that takes as much current as a1 AnswerThe minimum frequency of a force signal in Hz within its useful mid-band range of measurement for which the gain amplitude is more than 0.95 approximately is: GATE-Instrumentational-Engineering-20131 AnswerFor the circuit shown below, the knee current of the ideal Zener diode is 10 mA. To maintain 5 V across Rl, the minimum value of the load resistor Rl in Ω and the minimum power rating of the Zener diode in mW, respectively, are GATE-Instrumentatio1 AnswerTwo metallic wires A and B of the same material are connected in parallel. Wire A has length l and radius r, wire B has a length 2l and radius 2r. Compute the ratio of the total resistance of parallel combination and the resistance of wire A. -CBSE p1 AnswerExplain frequency modulation with neat waveforms.1 AnswerWith appropriate circuit diagram explain the DC load line analysis of semi conductor diode. 1 Answer