Last Answer : NO IT ONLY CONVERT FROM AC TO DC BECAUSE DIODE WHICH ARE USED IN IT, ARE UNIDIRECTIONAL.
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2 answers
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Sep 13, 2017
by
anonymous

Last Answer : IT CHANGES NEGATIVE CYCLE IN TO POSITIVE CYCLE FROM AC CURRENT.
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139 views
2 answers
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Sep 13, 2017
by
anonymous

Single-phase mid-point controlled rectifier with RL load
Last Answer : Single-phase mid-point controlled rectifier with RL load : The circuit configuration of single-phase midpoint controlled rectifier is shown in the figure. During positive half-cycle of ... some part of next positive half-cycle of voltage with reversed polarity can appear across load.
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1 answer
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Oct 13, 2019
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anonymous

Single-phase Midpoint controlled rectifier with Resistive load
Last Answer : Single-phase Midpoint controlled rectifier with Resistive load: 1) During positive half cycle of AC supply, a is positive with respect to b , this makes T1 forward biased and T2 is reverse ... voltage reverses the polarity and T2 is turned off. The operation is as shown in waveforms.
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619 views
1 answer
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Oct 13, 2019
by
anonymous

When the firing angle a of a single-phase, fully controlled rectifier feeding constant direct current into a load is 30°, the displacement power factor of the rectifier is
Last Answer : When the firing angle a of a single-phase, fully controlled rectifier feeding constant direct current into a load is 30°, the displacement power factor of the rectifier is √3/2
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1.4k views
1 answer
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Apr 29, 2018
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anonymous

Last Answer : Rectifier is use in power supply to convert Alternating current (AC) to Direct Current (DC) .
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109 views
1 answer
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Sep 13, 2017
by
anonymous

Last Answer : Full wave bridge rectifier is used in mobile chqrger.
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182 views
2 answers
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Sep 13, 2017
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anonymous
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Last Answer : the efficiency of centre tapped full wave rectifier and bridge rectifier is same that is 80.2% but the because of the use of Central trap the Transformer utilisation factor It's become low.hence we can say the bridge rectifier is more efficient
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104 views
1 answer
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Sep 13, 2017
by
anonymous

Last Answer : rectifier is a device which converts AC voltage to pulsating DC voltage using one or more diode diode conducts only in unit direction that is forward bias condition practically it does not conduct ... types one is with using two diodes and Centre tap Transformer and another is bridge wave rectifier
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1 answer
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Sep 13, 2017
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anonymous

A three phase controlled rectifier
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List out advantages and disadvantages of bridge rectifier.
Last Answer : Advantages : 1. Bridge rectifier can be used in applications allowing floating output terminals i.e. not output terminal is grounded. 2. The need of center-tapped transformer is eliminated. ... The value of the diodes used should be precise , else there will be an error in rectification
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212 views
1 answer
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May 16, 2020
by
anonymous

Define PIV, TUF, ripple factor, efficiency of rectifier.
Last Answer : PIV: Peak Inverse Voltage (PIV) is defined as the maximum negative voltage which appears across non-conducting reverse biased diode. TUF : Transformer Utilization Factor (TUF) is defined as the ratio of DC output ... Efficiency of rectifier: η = DC output power/ AC input power = PLdc / Pac
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828 views
2 answers
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May 2, 2020
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anonymous

operation of half wave rectifier type AC Voltmeter.
Last Answer : Half-wave Rectifier Voltmeter The d'Arsonval meter movement only responds to the average or dc value of the current through the moving coil. In order to measure alternating ... ) input voltage signal alternating signal needs to be rectified first by using diode rectifier to produce
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270 views
1 answer
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Sep 4, 2019
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anonymous

need of rectifier and filter.
Last Answer : Need of rectifier: Every electronics circuit needs a D.C. power source for its operation. The rectifier circuit is used to convert A.C. supply to unidirectional pulses . Need of filter: A filter ... only the D.C. components to reach the load. So filter is used to provide ripple free output.
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60 views
1 answer
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Aug 19, 2019
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anonymous

2.6k views
0 answers
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Jul 24, 2019
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anonymous

Explain full wave bridged rectifier with the help of circuit diagram and input output waveform.
Last Answer : 1. In positive half cycle (0 to Π): The end A of the secondary winding becomes positive and end B negative. This makes diode D1 and D4 forward biased while diode D2 and D3 are reverse biased. These two diodes will ... D2 and D3 when it is conducting is as follows. B - D2 - RL - D3 - A
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167 views
1 answer
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Sep 5, 2018
by
anonymous

An AC supply of 230 V is applied to a half-wave rectifier circuit through a transformer having primary to secondary turn’s ratio 12:1. The peak inverse voltage is A) 8.62 V B) 12 V C) 19.17 V D) 27.11 V
Last Answer : An AC supply of 230 V is applied to a half-wave rectifier circuit through a transformer having primary to secondary turn’s ratio 12:1. The peak inverse voltage is A) 8.62 V B) 12 V C) 19.17 V D) 27.11 V
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260 views
1 answer
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Jun 18, 2018
by
anonymous

In a half-wave rectifier, if an a.c supply is 60 Hz. Then what is the a.c ripple at output? (A) 30 Hz (B) 60 Hz (C) 20 Hz (D) 15 Hz
Last Answer : In a half-wave rectifier, if an a.c supply is 60 Hz. Then what is the a.c ripple at output? (A) 30 Hz (B) 60 Hz (C) 20 Hz (D) 15 Hz
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394 views
1 answer
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Apr 26, 2018
by
anonymous

Last Answer : The rectifier instrument is not free from frequency error.
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189 views
1 answer
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Mar 21, 2018
by
anonymous

Last Answer : The scale of a rectifier instrument is linear.
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161 views
1 answer
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Mar 21, 2018
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anonymous

Last Answer : Rectifier is a device which convert AC to DC.
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2.6k views
1 answer
asked
Sep 21, 2017
by
anonymous

State classification of Phase controlled rectifiers.
Last Answer : Classification of phase controlled rectifiers:
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106 views
1 answer
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May 21, 2020
by
anonymous
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Rectifiers are used to convert - (1) Direct current to Alternating current (2) Alternating current to Direct current (3) high voltage to low voltage (4) low voltage to high voltage
Last Answer : (2) Alternating current to Direct current Explanation: Converting DC power from one voltage to another is much more complicated. One method of DC-to-DC conversion first converts power to AC (using a ... inverter), then uses a transformer to change the voltage, and finally rectifies power back to DC.
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1 view
1 answer

Rectifiers are used to convert - (1) Direct current to Alternating current (2) Alternating current to Direct current (3) high voltage to low voltage (4) low voltage to high voltage
Last Answer : (2) Alternating current to Direct current Explanation: Converting DC power from one voltage to another is much more complicated. One method of DC-to-DC conversion first converts power to AC (using a ... inverter), then uses a transformer to change the voltage, and finally rectifies power back to DC.
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1 answer
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On AC vessels, which of the following statements represents the most difficult problem involved in obtaining a DC potential suitable for use by computer components? A. A stepdown transformer is ... voltage must be rectified and made ripple free. D. Rectifiers cannot operate with voltage regulators.
Last Answer : Answer: C
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4 views
1 answer

RC time constant characteristics, as shown in the illustration, are important in _____________. EL-0086 A. bridge rectifiers for alternator excitation B. timing and pulse shaping circuits C. transistor power amplifier biasing D. motor controller overload protection
Last Answer : Answer: B
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2 views
1 answer

High vacuum diodes, gas-filled diodes, and germanium semiconductor diodes may all be used as _____________. A. potentiometers B. rectifiers C. power sources D. photocells
Last Answer : Answer: B
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7 views
1 answer

What is the PIV of all type rectifiers?
Last Answer : The PIV of rectifier: - Half wave rectifier=Vm, Center tape wave rectifier=2Vm Bridge full wave=Vm
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3 views
1 answer

ECE Board Exam March 1996 A device to be connected across the headset in telephone receivers to reduce the effects of acoustic shock. A. Ground B. Two rectifiers in parallel with opposite polarities C. Protector D. Fuse
Last Answer : B. Two rectifiers in parallel with opposite polarities
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3 views
1 answer

What is rectifier? Write few types of rectifiers.
Last Answer : Rectifier is a device which converts AC supply into DC. Following are the types of rectifiers generally used. a. Copper oxide rectifier. b. Selenium rectifier. c. Electrolytic rectifier. d. Mercury arc rectifier. e. Tungar rectifier.
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4 views
1 answer

A half-wave voltage doubler is made up of how many half wave rectifiers?
Last Answer : Two.
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3 views
1 answer
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Aug 20, 2021
by
anonymous

A freewheeling diode in phase -controlled rectifiers (a) enables inverter operation (b) is responsible for additional reactive power (c) improves the line power factor (d) is responsible for additional harmonics
Last Answer : A freewheeling diode in phase -controlled rectifiers improves the line power factor
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509 views
1 answer
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Apr 25, 2018
by
anonymous

Electronic Voltmeters which use rectifiers employ negative feedback. This is done - a) To increase the overall gain b) To improve stability c) To overcome non -linearity of the diodes d) None of the above
Last Answer : Electronic Voltmeters which use rectifiers employ negative feedback. This is done - To overcome non -linearity of the diodes
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1.1k views
1 answer
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Apr 10, 2018
by
anonymous

2.6k views
0 answers
asked
Jul 25, 2019
by
anonymous

How is a thyristor used to convert AC to DC?
Last Answer : thyristor
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123 views
1 answer
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Mar 19, 2018
by
anonymous

Can transformer convert AC to DC?
Last Answer : No, Transformer cannot convert AC to DC.
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3.0k views
9 answers
asked
Dec 9, 2017
by
anonymous

Which device use to convert DC to AC?
Last Answer : Rectifier
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7.4k views
18 answers
asked
Dec 9, 2017
by
anonymous
