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What is the use of operational amplifiers?

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Description : What is the meaning of operational amplifier?

Description : How does an operational amplifier work?

Description : What is meant by distortion in amplifiers?

Answer : Transformer coupled amplifiers Direct coupled amplifiers Multistage amplifiers Darlington amplifiers Emmiter follower

Description : The effect of a finite gain of an operational amplifier used in an integrator is that (A) it would not integrate (B) the slope of the output will vary with time (C) the final value of the output voltage will reduce (D) there will be instability in the circuit

Answer : The effect of a finite gain of an operational amplifier used in an integrator is that there will be instability in the circuit

Answer : Electric locomotive has the highest operational availability.

Description : different types of feedback amplifiers

Answer : Types of feedback amplifiers: 1. Positive feedback amplifiers 2. Negative feedback amplifiers (i)voltage series feedback amplifiers (ii)voltage shunt feedback amplifiers (iii)current series feedback amplifiers (iv)current shunt feedback amplifiers

Description : Two non -inverting amplifiers, one having a unity gain and the other having again of twenty are made using identical operational amplifiers. As compared to the unity gain amplifier, the amplifier with gain twenty has

Answer : Two non -inverting amplifiers, one having a unity gain and the other having again of twenty are made using identical operational amplifiers. As compared to the unity gain amplifier, the amplifier with gain twenty has less bandwidth

Description : What is the use of diode in the circuit?

Answer : Diode is a device which allows the flow of current in one direction and blocks the current in opposite direction.

Description : What is the use of differential amplifier?

Description : What is the use of transformer?

Answer : The use of transformer  is to do lower or raise  the voltage or currents in an electrical  circuit.  That's quite so simple. 

Description : What is the use of a thyristor in a circuit?

Description : What is the use of a Mosfet?

Description : What is the use of Arduino Uno?

Description : What is the use of PWM in Arduino?

Description : What is the use of Arduino Mega?

Description : What language does the Arduino use?

Description : What is the basic use of capacitor?

Description : What is the use of synchronous motor?

Description : What do we use to generate electricity?

Answer : Use wind turbines.  In a windy seashore we set up some wind turbines.  But when the place is not windy we got no electricity.

Description : What is the use of Fast Fourier Transform?

Description : What is the use of Z transform?

Description : What is the use of DFT in DSP?

Description : What is the use of digital signal processing?

Description : What is the use of AC and DC drives?

Description : What is the use of signal flow graph?

Description : What is the use of Arduino board?

Description : What is the use of stability factor?

Description : What is the main use of a transistor?

Answer : Main use of a transistor as amplifier and as switch.

Description : What is the use of power factor correction?

Description : What is the use of lightning arrester?

Answer : The lighting arrester is used to discharge the high voltage surge towards the earth by the lighting strike

Description : What is the use of 555 timer?

Answer : 555 IC timer is use in timers and oscillators.

Description : What is the use of Buchholz relay in transformer?

Answer : This is a transformer that is used to step up and down current. 

Description : What is the use of an electric motor?

Answer : Electrical motors are use for converting electrical energy to mechanical energy. It may be use in fans, pumps, washing machine, cranes, trains, factories, industries etc.

Description : What is the use of Schottky diode?

Answer : Schottky diode are use in SMPS, Sample and hold circuits and voltage clamping etc.

Description : What is the use of laser diode?

Answer : laser diodes are use in telecommunication, rangefinders, barcode readers etc.

Description : What is the use of SCR?

Answer : SCR are use in lamp dimming, power regulators, motor control, rectifications of high power AC, control of welding machines and also use as switch these are some uses of silicon controlled rectifier.

Description : What is the use of fast recovery diode?

Answer : Fast recovery diode are used in high frequency rectification. Fast recovery diode also used for freewheeling. Fast recovery diode also used for DC to DC converter.

Description : State the use of synchroscope.

Answer : Use of Synchroscope: The synchroscope is used to determine the exact instant of switching required to connect the alternators in parallel or put an alternator in parallel with the infinite bus. ... idea of the faster or slower machine to make adjustments in speed of alternators for synchronising.

Description : State the advantages of use of high voltage in transmission of Electric power. 

Answer : Advantages: 1. As Transmission voltage increases, current decreases. 2. As current decreases, cross section of conductor decreases. 3. As cross section of conductor decreases, its ... high voltage transmission line, successful interconnection of transmission line is possible than low voltage. 

Description : Use phasors to find

Answer : Use phasors to find

Description : State the use of:- (i) Clip-on-ammeter (ii) Phase sequence indicator

Answer : (i) Clip-on-ammeter: used for measurement of current in cables/lines in live conditions without disconnecting them.  (ii) Phase sequence indicator: To determine /find the phase sequence of 3 phase supply. 

Description : An _____________is a network of electrical components used to supply, transfer and use electric power:  (A) Electric power system (B) Electric power (C) All of the above (D) None of the above

Answer : An Electric power system is a network of electrical components used to supply, transfer and use electric power.

Description : The use of regenerator in a gas turbine cycle  (1) increases efficiency but has no effect on output (2) increases output but has no effect on efficiency (3) increases both efficiency and output (4) increases efficiency but decreases output

Answer : The use of regenerator in a gas turbine cycle increases efficiency but has no effect on output

Description : Magnetic circuit breakers use _________ A) Permanent magnets B) Earth magnets C) Solenoid D) All the above

Answer : Magnetic circuit breakers use Solenoid 

Answer : The stator of phase shifting transformer for use in conjunction with an A.C. potentiometer usually has a two-phase winding.

Answer : In a shaded pole single-phase motor, the revolving field is produced by the use of shading coils.

Answer : Series capacitors on transmission lines are of little use when the load VAR requirement is small.

Answer : Discrimination between main and back up protection is provided by the use of relays which are slow.

Description : Use of auto-transformer is economical when the transformation ratio is?

Answer : Use of auto-transformer is economical when the transformation ratio is near unity.

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