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Rectifier is a device which convert AC to DC.
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Description :

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

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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Description :

List out advantages and disadvantages of bridge rectifier.

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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Description :

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Description :

 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 

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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Description :

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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Description :

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

Answer :

Peak Inverse Voltage (PIV): The maximum value of reverse voltage (for the diode in a rectifier) occurring at the peak of the negative cycle of the input cycle is called Peak Inverse Voltage. ... dc power delivered to the load to the ac input power from the secondary winding of the transformer. 

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Description :

Single-phase mid-point controlled rectifier with RL load

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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Description :

Single-phase Midpoint controlled rectifier with Resistive load

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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Description :

operation of half wave rectifier type AC Voltmeter.

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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217 views 1 answer
Description :

need of rectifier and filter. 

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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Description :

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

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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Description :

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

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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Description :

Answer :

The rectifier instrument is not free from frequency error.

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Description :

Answer :

The scale of a rectifier instrument is linear.

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Description :

Answer :

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

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Description :

Answer :

Full wave bridge rectifier is used in mobile chqrger.

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Description :

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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Description :

Answer :

NO IT ONLY CONVERT FROM AC TO DC BECAUSE DIODE WHICH ARE USED IN IT, ARE UNIDIRECTIONAL.

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Description :

Answer :

IT CHANGES NEGATIVE CYCLE IN TO POSITIVE CYCLE FROM AC CURRENT.

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Description :

Answer :

Ac to dc

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Description :

In a full wave rectifier with input frequency of 50 Hz, the frequency of the output is: (1) 50 Hz (2) 100 Hz (3) 150 Hz (4) 200 Hz

Answer :

In a full wave rectifier with input frequency of 50 Hz, the frequency of the output is: 100 Hz

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Description :

In a full wave rectifier circuit using centre tapped transformer, the peak voltage across half of the secondary winding is 30 V. Then PIV is: (1) 30 V (2) 60 V (3) 15 V (4) 10 V

Answer :

In a full wave rectifier circuit using centre tapped transformer, the peak voltage across half of the secondary winding is 30 V. Then PIV is: 60 V

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Description :

The ripple voltage in the output of a single phase half wave rectifier with 10 V rectified dc voltage with resistive load and without filter will be • 12.1 volt • 1.21 volt • 0.482 volt • 4.82 volt

Answer :

The ripple voltage in the output of a single phase half wave rectifier with 10 V rectified dc voltage with resistive load and without filter will be 12.1 volt

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Description :

Positive feedback is used in 1. Amplifier 2. Rectifier 3.Oscillator 4. Detector 

Answer :

Positive feedback is used in 1. Amplifier 2. Rectifier 3.Oscillator 4. Detector 

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Description :

A single-phase full-bridge diode rectifier delivers a load current of 10A, which is ripple free. Average and rms values of diode currents are respectively   (a) 10A, 7.07A (b) 5A, 10A (c) 5A, 7.07A (d) 7.07A, 5A

Answer :

A single-phase full-bridge diode rectifier delivers a load current of 10A, which is ripple free. Average and rms values of diode currents are respectively 5A, 7.07A

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Description :

In a fullwave rectifier circuit with centre tap transformer, if voltage between one end of secondary winding and centre tap is 300V peak, then PIV (peak inverse voltage) is a. 300 V b. 150 V c. 600 V 5 d. 900 V

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Description :

Rectification efficiency of a full wave rectifier without filter is nearly equals to:  (1) 51% (2) 61% (3) 71% (4) 81%

Answer :

Rectification efficiency of a fullwave rectifier without filter is nearly equals to: 81%

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Description :

Ripple factor for a half wave rectifier is  a. 1.65 b. 1.45 c. 1 d. 1.21 

Answer :

Ripple factor for a half wave rectifier is 1.21

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Description :

What is the name of the device used to convert alternating current into direct current ? (1) Ammeter (2) Galvanometer (3) Rectifier (4) Transformer

Answer :

Rectifier

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Description :

Answer :

Full wave rectified both time of positive and negative half cycle of ac.for thaat purpose two diodes are use.but in two diode case we have to use  centre trap transformer.to overcome on this disadvantage we use bridge rectifire having four diodes

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Description :

Answer :

working of Half wave rectifier The half-wave rectifier circuit using a semiconductor diode (D) with a load resistance RL but no smoothing filter is given in the figure. The diode is ... load. Since only half-cycles of the input wave are used, it is called a half wave rectifier. 

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87 views 2 answers
Description :

Which of the following circuit is used as 'Memory device' in computers ? (1) Rectifier (2) Flip-Flop (3) Comparator (4) Attenuator

Answer :

Flip-Flop

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Description :

When two semiconductors of pand n-type are brought in contact, they form p-n junction which acts like a/an (1) Conductor (2) Oscillator (3) Rectifier (4) Amplifier

Answer :

Rectifier

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Description :

The device used to change the speed of an electric fan is (1) Amplifier (2) Regulator (3) Switch (4) Rectifier

Answer :

Regulator

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Description :

Alternating current is converted into direct current by a (1) transformer (2) dynamo (3) oscillator (4) rectifier

Answer :

rectifier

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Description :

The device which converts AC to DC is (1) Oscillator (2) Amplifier (3) Rectifier (4) None of these

Answer :

Rectifier

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Description :

Explain with neat sketch, the working of full wave rectifier voltmeter.

Answer :

Full Wave Rectifier Type Voltmeter: Working of full wave rectifier type A. C. Voltmeter Referring to the circuit diagram, for rectification, a full wave bridge circuit (ABCD) is used. Input ... current passing through meter is given as, which causes full scale deflection of the meter.

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Description :

Define following parameter of rectifier: (i) Ripple factor (ii) Efficiency (iii) Peak Inverse Voltage (iv) Transformer utilization factor

Answer :

(i) Ripple Factor - Ripple factor (γ) may be defined as the ratio of the root mean square (rms) value of the ripple voltage to the absolute value of the DC component of the ... the same rectifier. Effective VA Rating of transformer is the average of primary and secondary VA rating of transformer.

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Description :

Silicon Controlled Rectifier (SCR)

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Description :

Name the circuit used in rectifier to minimize ripple. List the types of this circuit with simple circuit diagram.

Answer :

Rectifier filter is an electronic circuit that removes ripple or unwanted AC signal components from the output of a Rectifier. Types - (a) Series Inductor filter (d) Shunt capacitor filter (b) L-C type filter (e) Π - type filter

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Description :

Define rectifier. Draw circuit diagram and input-output waveforms of bridge type full wave rectifier 

Answer :

Rectifier - This circuit convert AC signal into DC.

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Description :

Draw the circuit diagram of bridge rectifier with π filter. Draw its input and output waveform. 

Answer :

Circuit diagram of bridge rectifier with π filter : Input and output waveform:

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Description :

An AC supply of 230 V is applied to half wave rectifier circuit. A transformer turns ratio is 20 : 1. Find i) Output DC voltage (ii) Peak Inverse Voltage (PIV)

Answer :

Solution:

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Description :

Explain Center-tapped full wave rectifier with the help of circuit diagram and draw input output waveforms. 

Answer :

Operation : During positive half cycle of an AC supply, D1 will forward biased and current starts flowing through load. The output voltage is equal to +Vs. During negative half cycle of an AC ... output voltage is equal to +Vs. In this pulsating DC waveform will be obtained at the load. 

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Description :

Suggest the suitable diode type for rectifier circuit. 

Answer :

Any general purpose diodes 1N4001 to 1N4007 series  Or Silicon diode & Germanium diode 

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133 views 1 answer
Description :

Define rectifier and list its types. 

Answer :

Definition: A rectifier is a circuit that converts AC input voltage into DC output voltage.  Types : 1) Half wave rectifier  2) Center tap full wave rectifier. 3) Bridge Rectifier 

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Description :

Sketch circuit diagram of bridge rectifier with LC filter. State function of each component.

Answer :

 Circuit diagram :  Components and its function: :  1. Transformer- An electrical device which transfers electrical energy from one electric circuit to other, without changing the frequency. The ... DC components.  4. Capacitor- It bypasses AC components if any and gives DC to load. 

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Description :

Name the type of rectifier for each of following feature : (i) Highest rectifier efficiency (ii) Highest form factor (iii) Two diode rectifier circuit (iv) PIV = 2Vm.

Answer :

(i) Highest rectifier efficiency : Center tapped & Bridge full wave Rectifier  (ii) Highest form factor : Center tapped & Bridge full wave Rectifier  (iii) Two diode rectifier circuit : Center tapped full wave Rectifier  (iv) PIV = 2Vm : Center tapped full wave Rectifier

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Description :

Define the term 'Ripple factor' for rectifier.

Answer :

Ripple factor: The ratio of RMS value of ac component present in the waveform to the dc component in the waveform is called as ripple factor.  OR  The unwanted AC components present in output waveform of a rectifier is called as ripple factor.

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