rectifiers are used to convert?

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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asked Oct 13, 2019 by anonymous

Single-phase Midpoint controlled rectifier with Resistive load

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.

619 views 1 answer

asked Oct 13, 2019 by anonymous

When the firing angle a of a single-phase, fully controlled rectifier feeding constant direct current into a

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

1.4k views 1 answer

asked Apr 29, 2018 by anonymous

why rectifier is used in power supply ?

Last Answer : Rectifier is use in power supply to convert Alternating current (AC) to Direct Current (DC) .

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asked Sep 13, 2017 by anonymous

which rectifier used in mobile charger?

Last Answer : Full wave bridge rectifier is used in mobile chqrger.

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asked Sep 13, 2017 by anonymous

which rectifier is more efficient?

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

104 views 1 answer

asked Sep 13, 2017 by anonymous

what is rectifier and its types?

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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asked Sep 13, 2017 by anonymous

A 3 phase controlled rectifier has an input voltage of 414 rms at 50Hz, R=10.Find the delay angle to produce a current of 50A

A three phase controlled rectifier

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asked Jul 22, 2021 by fcherono

List out advantages and disadvantages of bridge rectifier.

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

212 views 1 answer

asked May 16, 2020 by anonymous

Define PIV, TUF, ripple factor, efficiency of rectifier.

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

828 views 2 answers

asked May 2, 2020 by anonymous

operation of half wave rectifier type AC Voltmeter.

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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asked Sep 4, 2019 by anonymous

need of rectifier and filter.

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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asked Aug 19, 2019 by anonymous

Type of rectifier??

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asked Jul 24, 2019 by anonymous

Explain full wave bridged rectifier with the help of circuit diagram and input output waveform.

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

167 views 1 answer

asked 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

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

260 views 1 answer

asked 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?

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

394 views 1 answer

asked Apr 26, 2018 by anonymous

The rectifier instrument is not free from?

Last Answer : The rectifier instrument is not free from frequency error.

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asked Mar 21, 2018 by anonymous

The scale of a rectifier instrument is?

Last Answer : The scale of a rectifier instrument is linear.

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asked Mar 21, 2018 by anonymous

What is rectifier?

Last Answer : Rectifier is a device which convert AC to DC.

2.6k views 1 answer

asked Sep 21, 2017 by anonymous

State classification of Phase controlled rectifiers.

State classification of Phase controlled rectifiers.
Last Answer : Classification of phase controlled rectifiers:

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asked May 21, 2020 by anonymous

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

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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asked Jan 4 by itszee

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

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.

1 view 1 answer

asked Jan 4 by itszee

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 always required. B. Vessel vibrations affect the voltage source. C. The voltage must be rectified and made ripple free. D. Rectifiers cannot operate with voltage regulators.

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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asked Jan 4 by itszee

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

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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asked Jan 4 by itszee

High vacuum diodes, gas-filled diodes, and germanium semiconductor diodes may all be used as _____________. A. potentiometers B. rectifiers C. power sources D. photocells

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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asked Jan 4 by itszee

What is the PIV of all type rectifiers?

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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asked Dec 23, 2021 by itszee

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

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

3 views 1 answer

asked Dec 22, 2021 by rohanb31

What is rectifier? Write few types of rectifiers.

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.

4 views 1 answer

asked Nov 15, 2021 by itszee

A half-wave voltage doubler is made up of how many half wave rectifiers?

A half-wave voltage doubler is made up of how many half wave rectifiers?
Last Answer : Two.

3 views 1 answer

asked Aug 20, 2021 by anonymous

A freewheeling diode in phase -controlled rectifiers

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

509 views 1 answer

asked Apr 25, 2018 by anonymous

Electronic Voltmeters which use rectifiers employ negative feedback. This is done -

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

1.1k views 1 answer

asked Apr 10, 2018 by anonymous