Description : The three devices which make up the circuit shown in the illustration are ____________. EL-0087 A. flip-flops B. exclusive 'OR' gates C. summing op amps D. function generators
Last Answer : Answer: A
Description : How frequency to voltage converted on OP-AMPS.
Last Answer : A Frequency to voltage converter produces an output voltage, whose amplitude is a function of frequency of the input signal. The input signal may be a sinewave, a square wave or a pulse train. The F/V converter is essentially an FM detector or discriminator.
Description : Mention some of the non – linear applications of op-amps
Last Answer : Rectifier, peak detector, clipper, clamper, sample and hold circuit, log amplifier, anti –log amplifier, multiplier are some of the non – linear op-amp circuits.
Description : Mention some of the linear applications of op – amps.
Last Answer : Adder, subtractor, voltage –to- current converter, current –to- voltage converters, instrumentation amplifier, analog computation ,power amplifier, etc are some of the linear opamp circuits.
Description : What is the need for frequency compensation in practical op-amps?
Last Answer : Frequency compensation is needed when large bandwidth and lower closed loop gain is desired. Compensating networks are used to control the phase shift and hence to improve the stability.
Description : In practical op-amps, what is the effect of high frequency on its performance?
Last Answer : The open-loop gain of op-amp decreases at higher frequencies due to the presence of parasitic capacitance. The closed-loop gain increases at higher frequencies and leads to instability.
Description : Draw the circuit diagram for Instrumentation amplifier using three OP-AMPs. State its advantages and applications.
Last Answer : Application: 1. In Data acquisition from low output transducers such as strain gauges, Thermocouples, Wheatstone bridge measurements e.t.c 2. In Medical instrumentation, Navigation, Radar ... video data acquisition and imaging 5. High frequency signal amplification in cable RF systems
Last Answer : 1
Last Answer : Op amp is operational amplifier. Operational amplifier are use in ADC, zero crossing detector ,DAC, filters, Voltage regulators, Current regulators, etc.
Description : The operational amplifier is _______ (a) High gain amplifier (b) high power amplifier (c)high resistance amplifier (d)low resistance amplifier
Last Answer : a) High gain amplifier
Description : Non-inverting amplifier circuits have _______ (a) Very high input impedance (b) very low input impedance (c) low output impedance (d) none of above
Last Answer : (a) Very high input impedance
Description : Process of conversion low voltage to high voltage is called _______ (a) Rectification (b)forward bias (c) reverse bias (d) amplification
Last Answer : (d) amplification
Description : In transistor, the base region is of the order of _______ (a) 10-5 m (b) 10-2 m (c) 10-8 m (d) 10-6 m
Last Answer : d) 10-6 m
Description : The potential barrier for germanium is _______ (a) 0.6 V (b) 0.2 V (c) 0.3 V (d) 0.5 V
Last Answer : (c) 0.3 V
Description : _______ electric power is the most common method used by electrical grids to transfer power. (A) One-phase (B) Two-phase (C) Three-phase (D) None of the above
Last Answer : Three-phase electric power is the most common method used by electrical grids to transfer power.
Description : The emission in which the atom emits a photon of energy hf = E2 – E1 , in any arbitrary direction is a) Spontaneous emission b) stimulated emission c) induced emission d) both a & c
Last Answer : d) both a & c
Description : The incident photon absorbed by an atom in the ground state E1, thereby leaving the atom in the excited state E2 , is a) spontaneous absorption b) stimulated absorption c) induced absorption d) both b & c
Last Answer : d) both b & c
Description : The continuous X-ray spectrum is obtained due to the effect called a) Braking radiation b) Bremsstrahlung c) both a & b d) none of a & b
Last Answer : b) Bremsstrahlung
Description : Why are vacuum tubes also called valves? A) Because they can amplify the weak signals and make them strong B) Because they can stop or allow the flow of current C) Both of above D) None of above
Last Answer : Answer : B
Description : Capacity of battery fuse in AC Coaches a. 315 A & 400 (HRC ) c. 16 A (HRC ) b. 63 A (HRC ) d. 5 A (HRC )
Last Answer : a. 315 A & 400 (HRC )
Description : Three spectral series, paschen series, Brackett series, Pfund series are found in the a) ultraviolet region b) visible region c) infrared region d) a & b region
Last Answer : c) infrared region
Description : The Si unit of mutual inductance and self inductance is: a.same b. different c. no unit d. a & b
Last Answer : b. different
Description : Does wearing a hat amplify your chances of loosing your hair?
Last Answer : In my case, I have always worn hats, including at work, and am now very shiny on top. but I blame it on the vasectomy
Description : Im trying to amplify my wireless with my mac mini downstairs,but i dont know how.
Last Answer : Well, let's assume that it isn't the mac screwing up. The only thing I can think of to recommend is buying an Airport Express and plugging it closer to your Mac Mini, the only problem is, you ... far away is the mini from the router and how many walls\ceilings does the signal have to pass through?
Description : What is Amplify ?
Last Answer : Amplify .
Description : How To Use Wire Shelving to Amplify Space in a Child’s Closet?
Last Answer : Most standard children's bedroom closets contain one shelf andone hanging bar, which is not a good use of space. In a closet suchas this, it is easy for a small space to quickly become ... width, depth, and height anddraw a diagram of the closet on paper to decide where wire shelvingis nee
Description : How much can I amplify my speakers without breaking them?
Last Answer : When it comes to amplifying your speakers without blowing them it all depends really on what kind of speakers they are . Usually you can only put them mid way without blowing them completly , as having them on high on the time will completely destroy them in no time .
Description : Yeast artificial chromosome can be used to amplify DNA sequences of the size (A) Upto 10 kb (B) Upto 45 kb (C) Upto 100 kb (D) Upto 1,000 kb
Last Answer : Answer : D
Description : Twenty cycles of PCR can amplify DNA: (A) 220 fold (B) 202 fold (C) 20 x 2 fold (D) 20 fold
Last Answer : Answer : A
Description : Polymerase chain reaction can rapidly amplify DNA sequences of the size (A) Upto 10 kilobases (B) Upto 45 kilobases (C) Upto 100 kilobases(D) Upto 1,000 kilobases
Description : In a logic circuit, the NOT gate function _____________. A. does not alter a logical input B. serves to amplify a given signal level C. must be accomplished with a common collector transistor arrangement D. reverses an input logic condition
Last Answer : Answer: D
Description : What is the device used in fiber optic communication which consist of a receiver transmitter use to clean up and amplify digital data moving in one direction and another in the opposite direction? A. Optic compressors B. Optic retarders C. Optic isolator D. Optic regenerators
Last Answer : D. Optic regenerators
Description : Circuit used to amplify the optical signal in fiber optics communications links. A. Attenuator B. Optical repeater C. Optical amplifier D. Generator
Last Answer : B. Optical repeater
Description : What type of amplifier would be used to amplify the signal from a radio antenna?
Last Answer : An rf voltage amplifier.
Description : The common-emitter transistor circuit can amplify a small current signal because a small change in the signal current produces one of the following. Does the change in signal produce a large change in the: w) emitter-base voltage x) base current y) collector current z) collector voltage
Last Answer : ANSWER: Y -- COLLECTOR CURRENT
Description : can transistor amplify dc?
Last Answer : No
Description : can transistors amplify voltage?
Last Answer : Yup
Description : When a voltage of 95 VDC is applied to the circuit illustrated with a resistance of 470 ohms the current will be _______. EL-0018 A. 4.95 amps B. 202.2 milliamps C. 565.00 milliamps D. 2,325 milliamps
Last Answer : Answer: B
Description : When a voltage of 95 VDC is applied to the illustrated circuit with a resistance of 10.23 kohms the current will be _______ . EL-0018 A. 9.29 milliamps B. 107.68 amps C. 10.32 amps D. 11.02 amps
Description : When a voltage of 95 VDC is applied to the illustrated circuit with a resistance of 110 ohms the current will be _______. EL-0018 A. 0.863 amps B. 1.16 amps C. 1.863 amps D. 205 milliamps
Description : When a voltage of 95 VDC is applied to the illustrated circuit with a resistance of 32 ohms the current will be _______. EL-0018 A. 0.336 amps B. 2.968 amps C. 103.78 milliamps D. 127 milliamps
Description : When a voltage of 95 VDC is applied to the illustrated circuit with a resistance of 12 ohms the current will be _______. EL-0018 A. 6.126 amps B. 1.515 amps C. 7.916 amps D. 107 amps
Last Answer : Answer: C
Description : When a voltage of 115 VDC is applied to the illustrated circuit with a resistance of 17.8 ohms the current will be _______. EL-0018 A. 0.154 amps B. 2.755 amps C. 6.46 amps D. 0.1328 amps
Description : When a voltage of 115 VDC is applied to the illustrated circuit with a resistance of 237 ohms the current will be _______. EL-0018 A. 0.485 amps B. 1.485 amps C. 2.06 amps D. 0.352 amps
Description : When a voltage of 115 VDC is applied to the illustrated circuit with a resistance of 470 ohms the current will be _______. EL-0018 A. 244 milliamps B. 4.07 amps C. 5.85 amps D. 19.21 amps
Description : When a voltage of 115 VDC is applied to the illustrated circuit with a resistance of 10,230 ohms the current will be _______ EL-0018 A. 88.95 milliamps B. 103.45 milliamps C. 11.24 milliamps D. 0.91 amps
Description : When a voltage of 115 VDC is applied to the illustrated circuit with a resistance of 32 ohms the current will be _______. EL-0018 A. 278.26 amps B. 147.00 amps C. 8.90 amps D. 3.59 amps
Description : When a voltage of 115 VDC is applied to the illustrated circuit with a resistance of 12 ohms the current will be _______. EL-0018 A. 127 amps B. 9.58 amps C. 104.34 amps D. 1.24 amps
Description : When a voltage of 25 VDC is applied to the illustrated circuit with a resistance of 105.3 ohms the current will be _______. EL-0018 A. 130.3 amps B. 4.212 amps C. 1.237 amps D. 0.237 amps
Description : When a voltage of 442.7 VDC is applied to the illustrated circuit with a resistance of 1.25 ohms the current will be _______. EL-0018 A. 28.25 amps B. 35.32 amps C. 354.16 amps D. 443.62 amps