Write advantages and disadvantages of positive and negative feedback.
Last Answer : Advantages of Positive Feedback: i) Voltage gain increases. ii) No phase shift is provided. iii) Feedback signal and input signal are in phase. iv) Input and Output voltage increases. ... ii) Feedback signal and input signal are out of phase. iii) Input and Output voltage decreases.
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4.2k views
1 answer
asked
Sep 5, 2018
by
anonymous
Differentiate between positive and negative feedback.
Last Answer : PARAMETER POSITIVE FEEDBACK NEGATIVE FEEDBACK Overall phase shift 0° or 360° 180° Feedback and input signal Are in phase Are out of phase Input signal ... Increases Input impedance Decreases Increases Output impedance Increases Decreases
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159 views
1 answer
asked
Sep 5, 2018
by
anonymous
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Define negative and positive feedback
Last Answer : 1. Negative feedback: Feedback in which feedback signal is out of phase with input signal and it decreases output is called negative feedback. 2. Positive feedback: Feedback in which feedback signal is in phase with input signal and it increases output is called positive feedback.
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112 views
1 answer
asked
Sep 5, 2018
by
anonymous
Why does charge flow from positive to negative?
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76 views
0 answers
asked
Mar 14, 2018
by
anonymous
Which is the positive terminal anode or cathode?
Last Answer : Anode is positive terminal and cathode is negative terminal.
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123 views
1 answer
asked
Dec 9, 2017
by
anonymous
What is the difference between an anode and a cathode?
Last Answer : The anode is positively charged electrode and the cathode is negatively charged electrode.
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128 views
1 answer
asked
Mar 14, 2018
by
anonymous
Do electrons flow from the anode to the cathode?
Last Answer : electrons flow from cathode to anode because the electron has a negative charge and repels from the negatively charged cathode whilst also attracting to the positively charged anode.
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198 views
2 answers
asked
Mar 14, 2018
by
anonymous
Last Answer : SCR turned off when the anode current falls below holding current.
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924 views
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Mar 6, 2018
by
anonymous
Is the anode or cathode longer in LED ?
Last Answer : In LED anode terminal is longer and cathode terminal is smaller.
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asked
Dec 9, 2017
by
anonymous
advantages of negative feedback over positive feedback.
Last Answer : Advantages of negative feedback over positive feedback: 1. Higher fidelity i.e. more linear operation. 2. Highly stabilized gain. 3. Increased bandwidth i.e. improved frequency response. 4. Less ... . 8. Input and output impedance can be modified as desired. 9. Less frequency distortion.
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274 views
1 answer
asked
Sep 3, 2019
by
anonymous
Compare positive and negative feedback.
Last Answer : Sr. No. Parameter Positive feedback Negative feedback 1 BW Increases Decreases 2 Feedback signal In phase with the input signal. 180 º out of phase ... impedance increases decreases 9 Uses Oscillators, Schmitt trigger Amplifiers, bootstrapping
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136 views
1 answer
asked
Sep 3, 2019
by
anonymous
Can the electric field between two positive charges be zero?
Last Answer : It can only if they have equal charges.
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80 views
1 answer
asked
Mar 14, 2018
by
anonymous
Do you have a positive attitude or a negative one?
Last Answer : I’m an “expect the worst, hope for the best” kind of person.
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Mar 2
by
anonymous
Do you feel Trump running the country as president is a positive or negative thing and why?
Last Answer : I think he's an idiot, a blowhard, and a liar. I think he is an illegitimate President, that only came to power because he's in some sort of cahoots, or pile of shit with the Russians, who interfered ... House. He's a fool, and bully. He does not care about the majority of Americans. He loves money.
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1 answer
asked
Mar 1
by
anonymous
Do cell-phones have more positive effects than negative effects?
Last Answer : answer:A Wikipedia article has this to say about health risks from cell phones: The effect mobile phone radiation has on human health is the subject of recent interest and study, as a result ... estimates, because the increase in brain cancers has not paralleled the increase in mobile phone use.
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1 answer
asked
Feb 28
by
anonymous
Do you consider yourself to be a positive person or a negative person and why?
Last Answer : I’m a pessimist no doubt. I constantly worry about the worst case scenario.
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1 answer
asked
Feb 27
by
anonymous
What are some positive forms of peer pressure?
Last Answer : The opposite of the ones that got you smoking and drinking and hanging around with the wrong girls when you were a kid.
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1 answer
asked
Mar 2
by
anonymous
How to Keep a Positive Attitude ?
Last Answer : How to Keep a Positive Attitude Keeping a positive attitude can be hard to do when you got up at the wrong side of the bed, everything seems to be going wrong and you're just irritated with ... calm. These things won't come easily, but if you are dedicated enough, you will surely find them.
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1 answer
asked
May 8, 2021
by
anonymous
Is it okay to talk about something positive in your life, or is it flaunting?
Last Answer : Do you care what anyone else thinks? You feel pretty strongly about it already. Personally I believe people will get good news from me if they ask specifically. I don’t volunteer it. “Maaaaan, I got a B on that test. What’d you get?” “Heh, I got an A. Congrats on the B, want to study together?”
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1 answer
asked
Feb 26
by
anonymous
Why is the phrase "Two can play at that game!" always referring to something negative?
Last Answer : That’s not what he meant last night. (waggle, waggle)
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1 answer
asked
Mar 2
by
anonymous
The effect of negative feedback on distortion and bandwidth is A) Both distortion and bandwidth get decreased B) Both distortion and bandwidth get increased C) Distortion is reduced and bandwidth is increased D) Distortion is increased and bandwidth is decreased
Last Answer : The effect of negative feedback on distortion and bandwidth is Distortion is reduced and bandwidth is increased
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190 views
1 answer
asked
Jun 18, 2018
by
anonymous
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An amplifier has a voltage gain of 120. To reduce distortion, 10% negative feedback is employed. The gain of the amplifier with feedback is (1) 141 (2) 92.3 (3) 9.23 (4) 1.41
Last Answer : An amplifier has a voltage gain of 120. To reduce distortion, 10% negative feedback is employed. The gain of the amplifier with feedback is 9.23
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317 views
1 answer
asked
May 1, 2018
by
anonymous
A negative sequence relay is used for protection of (1) Generator (3) Motor (2) Transformer (4) Long Transmission lines
Last Answer : A negative sequence relay is used for protection of Generator
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627 views
1 answer
asked
May 1, 2018
by
anonymous
A transformer has negative voltage regulation when its load power factor is (1) Zero (2) Unity (3) Leading (4) Lagging
Last Answer : 0
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5.1k views
3 answers
asked
Apr 30, 2018
by
anonymous
A unity negative feedback control system is found to have a gain margin of 20 dB. The Nyquist plot of the system (A) crosses the real axis at +0.1 (B) crosses the real axis at -0.1. (C) crosses the imaginary axis at -0.1 (D) crosses the imaginary axis at +0.1
Last Answer : A unity negative feedback control system is found to have a gain margin of 20 dB. The Nyquist plot of the system crosses the real axis at -0.1.
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263 views
1 answer
asked
Apr 28, 2018
by
anonymous
Which diode exhibits negative resistance characteristic? (A) LED (B) Zener (C) Tunnel diode (D) PN diode
Last Answer : Which diode exhibits negative resistance characteristic? (A) LED (B) Zener (C) Tunnel diode (D) PN diode
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199 views
1 answer
asked
Apr 28, 2018
by
anonymous
Negative feedback in a closed-loop control system DOES NOT (A) reduce the overall gain (B) reduce bandwidth (C) improve disturbance rejection (D) reduce sensitivity to parameter variation
Last Answer : Negative feedback in a closed-loop control system DOES NOT reduce bandwidth
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229 views
1 answer
asked
Apr 26, 2018
by
anonymous
The transducer with negative temperature co-efficient of resistance is (A) Thermistor (B) Resistance Thermometer (C) Strain Gauge (D) Thermocouple
Last Answer : The transducer with negative temperature co-efficient of resistance is Thermistor
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89 views
1 answer
asked
Apr 25, 2018
by
anonymous
Negative voltage regulation is indicative that the load is?
Last Answer : Negative voltage regulation is indicative that the load is capacitive.
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236 views
1 answer
asked
Mar 19, 2018
by
anonymous
Which side of a capacitor is negative?
Last Answer : In electrolytic type negative is shorter lead and usually mark in the tank. But of course not applicable to non-polar.
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166 views
1 answer
asked
Mar 15, 2018
by
anonymous
How does negative feedback reduces distortion in an amplifier?
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282 views
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Mar 10, 2018
by
anonymous
What kind of feelings does the term "give back" bring to mind for you?
Last Answer : Good feelings. No matter how hard I’ve had it, there is always someone worse off than me, who I could be helping in however small a way. I think of it as sharing good fortune.
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1 answer
asked
Feb 27
by
anonymous
What destinations have you visited that exceeded your expectations & which were perhaps not what you envisaged?
Last Answer : answer:Better- Northern Wisconsin. I discovered a little town in northern Wisconsin when planning our first family vacation over 10 years ago. We originally planned on visiting Wisconsin Dells, but I wanted something a ... (sorry NYC fans) It was way too crowded for my liking, plus it smelled. :(
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2 views
1 answer
asked
Feb 27
by
anonymous
When cathode is positive with respect to anode in an SCR, the number of blocked p-n junctions is (a) 1 (b) 2 (c) 3 (d) 4
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169 views
0 answers
asked
Apr 10, 2018
by
anonymous
Explain the properties of (positive) anode rays.
Last Answer : Ans : Properties of Positive(Anode) Rays : (1) Path : These rays also travel in straight lines from anode to cathode. (2) Material Particles : They cause a light paddle wheel to rotate ... gas in the tube. (6) Kinetic Energy : They produce mechanical pressure indicating they possess kinetic energy.
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(3) made cathode and a pure nickel red, the anode Explanation: Electroplating is the deposition by electrolysis of a coating of metal upon a conducting surface. The simplest system makes the object to be ... on the spoon is called reduction and, therefore, the spoon is also referred to as a cathode.
Last Answer : Which of the following is not a method of preparing oxygen? (1) Electrolysis of water (2) Fractional distillation of liquid air (3) Decomposition of potassium permanganate (4) Decomposition of manganese dioxide
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1 answer
. In a common anode, seven-segment LED display, an individual LED will light if a negative voltage is applied to what element?
Last Answer : The cathode.
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75 views
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Aug 20, 2021
by
anonymous
43 views
0 answers
asked
Mar 4, 2020
by
anonymous
Define cathode and anode.
Last Answer : Cathode: The electrode which is connected to the negative terminal (pole) of a battery is called as cathode. It is a negative electrode. Anode: The electrode which is connected to the positive terminal (pole) of a battery is called as anode. It is a positive electrode.
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44 views
1 answer
asked
Sep 3, 2018
by
anonymous
A SCR has an anode supply of sine voltage 200V rms, 50 Hz applied through a 100Q resistor and fired at an angle of 60°. Assuming no voltage drop, the rms value of the output voltage is : (A) 89,7 V (B) 126.7 V (C) 166.7 V (D) 288.28 V
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107 views
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asked
Apr 14, 2018
by
anonymous
If a forward voltage (less than forward breakover voltage) is suddenly applied across anode and cathode of a thyristor, it may result into (a) Damage to the thyristor (b) Premature triggering of the ... because of high dV/dt (c) Reduced holding current of the thyristor (d) All of the above
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102 views
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asked
Apr 10, 2018
by
anonymous
Why does DNA move towards the anode in gel electrophoresis? -Biology
Last Answer : answer:
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1 answer
asked
Feb 2
by
anonymous
Which action is performed on the anode ?
Last Answer : The oxidation process is completed at the anode.
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1 answer
asked
Jan 27
by
anonymous
What is used as an anode in X ray machine ?
Last Answer : Copper is used as an anode in X ray machines.
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1 answer
asked
Jan 27
by
anonymous
What is anode ?
Last Answer : An electric gate connected to the negative end of a power source is called an anode. Oxidation occurs at the anode.
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1 answer
asked
Jan 27
by
anonymous
Last Answer : Anode াত negatively charged.
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1 answer
asked
Jan 26
by
anonymous
A gas P is obtained at anode during the electrolysis of brine. The gas P when treated with excess of `NH_3` released a diatomic gas Q. Find the value
Last Answer : A gas P is obtained at anode during the electrolysis of brine. The gas P when treated with excess of `NH_3` ... x & y are the molar mass of P and Q.
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1 answer
Electrolytic reduction of `Al_(2)O_(3)`. Electrolyte (`Al_(2)O_(3)+"cryolite")` Anode: Graphite rods. Coke powder is spreadded over the molten electro
Last Answer : Electrolytic reduction of `Al_(2)O_(3)`. Electrolyte (`Al_(2)O_(3)+"cryolite")` Anode: Graphite rods. ... of molten aluminium by air D. (a) both (b)
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1 answer
Electrolytic reduction of `Al_(2)O_(3)`. Electrolyte (`Al_(2)O_(3)+"cryolite")` Anode: Graphite rods. The purpose of adding crylite is :
Last Answer : Electrolytic reduction of `Al_(2)O_(3)`. Electrolyte (`Al_(2)O_(3)+"cryolite")` Anode: Graphite rods. ... . to increase melting point of `Al_(2)O_(3)`
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1 answer
Electrolytic reduction of `Al_(2)O_(3)`. Electrolyte (`Al_(2)O_(3)+"cryolite")` Anode: Graphite rods. What is wrong if anode is made of nickel instant
Last Answer : Electrolytic reduction of `Al_(2)O_(3)`. Electrolyte (`Al_(2)O_(3)+"cryolite")` Anode: Graphite ... CO D. Nickel May be affected by high temperature.
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