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.
asked
Oct 13, 2019
by
anonymous
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.
asked
Oct 13, 2019
by
anonymous
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
asked
Apr 29, 2018
by
anonymous
Answer :
Rectifier is use in power supply to convert Alternating current (AC) to Direct Current (DC) .
asked
Sep 13, 2017
by
anonymous
Answer :
Full wave bridge rectifier is used in mobile chqrger.
asked
Sep 13, 2017
by
anonymous
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
asked
Sep 13, 2017
by
anonymous
Answer :
NO IT ONLY CONVERT FROM AC TO DC BECAUSE DIODE WHICH ARE USED IN IT, ARE UNIDIRECTIONAL.
asked
Sep 13, 2017
by
anonymous
Answer :
IT CHANGES NEGATIVE CYCLE IN TO POSITIVE CYCLE FROM AC CURRENT.
asked
Sep 13, 2017
by
anonymous
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
asked
Apr 26, 2018
by
anonymous
Answer :
Rectifier is a device which convert AC to DC.
asked
Sep 21, 2017
by
anonymous
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
asked
May 16, 2020
by
anonymous
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.
asked
Aug 19, 2019
by
anonymous
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
asked
Sep 5, 2018
by
anonymous
Description : Types of rolling mills and its applications
Answer :
Types of rolling mills and its applications (1) Two-high rolling mill: used in blooming and slabbing mills (2) Three-high rolling mill: used for making plates or sections. (3) Four- ... : This mill is used for rolling stainless steel and other high strength steel sheets of thin gauge.
asked
May 7, 2020
by
anonymous
Description : Define contract and state its types.
Answer :
Definition of Contract:- The agreement between two parties under some specific terms and conditions is known as contract. Types of Engineering contract:- 1) Lump sum contract 2) Item rate contract 3) ... contract 11)Cost plus(+) fluctuating fees rate contract 12) Cost plus(+) fix fee contract
asked
Sep 19, 2018
by
anonymous
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.
asked
May 2, 2020
by
anonymous
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
asked
Sep 4, 2019
by
anonymous
asked
Jul 24, 2019
by
anonymous
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
asked
Jun 18, 2018
by
anonymous
Answer :
The rectifier instrument is not free from frequency error.
asked
Mar 21, 2018
by
anonymous
Answer :
The scale of a rectifier instrument is linear.
asked
Mar 21, 2018
by
anonymous
Description : Define earthing. State its types.
Answer :
Definition of earthing: * Earthing means connecting the metal body of electrical device to the general mass of earth by a wire of negligible resistance. OR * Earthing means connecting the metal body of ... ii) Pipe type earthing iii) Rod type earthing iv) Strip earthing v)Water main earthing
asked
May 7, 2020
by
anonymous
asked
Sep 13, 2017
by
anonymous
Description : What are the types of error?
Answer :
Human error or gross error, systematic error, applicational error and random error are the types of error.
asked
May 6, 2018
by
anonymous
Description : What are the different types of capacitors?
asked
Mar 15, 2018
by
anonymous
Description : What are the five types of single phase motors used in the industry?
asked
Mar 15, 2018
by
anonymous
Description : What are the different types of welding?
asked
Mar 11, 2018
by
anonymous
Description : What are the different types of sensors?
asked
Mar 11, 2018
by
anonymous
Description : What are the different types of microcontrollers?
asked
Mar 11, 2018
by
anonymous
Description : What are the different types of telecommunication systems?
asked
Mar 10, 2018
by
anonymous
Description : What are the types of electronic communication?
asked
Mar 10, 2018
by
anonymous
Description : What are the types of power generation?
asked
Mar 10, 2018
by
anonymous
Description : What are the different types of control systems?
asked
Mar 10, 2018
by
anonymous
Description : What are the different types of Arduino boards?
asked
Mar 10, 2018
by
anonymous
Description : What are the types of biasing?
Answer :
Biasing is classified into 2 types.The 2 types are 1) Forward biasing 2) Reverse biasing
asked
Mar 10, 2018
by
anonymous
Description : What are the types of power losses in inductor?
Answer :
Copper losses, Eddy current loss, and hysteresis loss are the types of power losses in inductor.
asked
Mar 8, 2018
by
anonymous
Description : what are the three different types of Electric power?
Answer :
Real,reactive,apparent power
asked
Dec 4, 2017
by
anonymous
Answer :
MOSFETs are of two types namely 1) enhancement type MOSFET or E-MOSFET 2) depletion type MOSFET or D-MOSFET
asked
Sep 22, 2017
by
anonymous
Description : State the different types of outdoor flood lighting and where are they used.
Answer :
There are three types of projectors used for flood lighting : a) Narrow beam Projector b) Medium angle Projector c) Wide angle Projector a) Narrow beam Projectors: - Light beam with such ... yards, stadiums, car parking area etc. 3) It is used for illuminating advertisements, boarding's etc.
asked
May 3, 2020
by
anonymous
Description : State different types of electrical signal and draw all types of waveforms.
Answer :
Types of electrical signals 1) Sine wave 2) Triangular wave 3) Square wave Waveforms
asked
May 2, 2020
by
anonymous
Description : Define service connection and state types connection and state types of overhead service connection
Answer :
Service Connection:- It is the input conductor or wire which is carried out from supply company (authorities) pole to consumers' main board or premises. Types of overhead service ... 1. Overhead service connection with Bare conductor 2. Overhead service connection with weather proof cable
asked
Sep 18, 2018
by
anonymous
Description : State two types of inductors and give their applications.
Answer :
Types of inductors: i) Air cored inductor ii) Iron cored inductor iii) Ferrite cored inductor Air cored inductor: These are used for high frequency application e.g. Radio sets ... radio receiver, wide band pulse transformers, oscillators, signal generators, high frequency amplifiers, etc.
Description : Enlist the types of shapers.
Answer :
Types of shapers: Based on the type of driving mechanism: a) Crank type shaper. b) Geared type shaper. Based on ram travel: a) Horizontal shaper. b) Vertical shaper. Based on the table design: a ... shaper. b) Universal shaper. Based on cutting stroke. a) Push cut type. b) Draw cut type.
Description : List the types of filters.
Answer :
Types of filter are as follows: 1. Shunt Capacitor filter (C filter) 2. Series Inductor filter (L filter) 3. LC filter 4. π filter (CLC filter)
asked
May 16, 2020
by
anonymous
Description : State the types of protections provided by MCB.
Answer :
The types of protections provided by MCB: 1. MCB provides short circuit protection. 2. MCB provides overload protection
asked
May 7, 2020
by
anonymous
Description : State different types of holders used in wiring installation.
Answer :
Following types of holders used in wiring installation: 1. Pendent Holder 2. Batten Holder 3. Angle holder 4. Screwed holder
asked
May 7, 2020
by
anonymous
Description : Types of slotting machine
Answer :
1. Puncher slotter 2. Precision slotter 3. Production slotter Working Principle of Slotting machine:- The slotting machine is a reciprocating machine tool in which, The vertical slide holding the cutting ... longitudinal and cross feeds, a rotary feed motion is also provided in the work table.
asked
May 7, 2020
by
anonymous
Description : List types of chips produced in machining process.
Answer :
The various types of chips produced in machining process are as follows: 1. Continuous chips: According to its name, continuous chips have a continuous segment. . 2. Discontinuous chips or segmental chips: ... chip is same as the continuous chips except a built edge is form at the face of tool.
asked
May 7, 2020
by
anonymous
Description : List types of timers.
Answer :
Types of Timers: Retentive Timers: 1. ON Delay 2. OFF Delay Non Retentive Timers: 1. ON Delay 2. OFF Delay
asked
May 6, 2020
by
anonymous
Description : List the different types of tariff.
Answer :
Various types of Tariff:- 1) Flat-demand Tariff 2) Simple-demand Tariff or Uniform Tariff 3) Flat-rate Tariff 4) Step-rate Tariff 5) Block-rate Tariff 6) Two-part Tariff 7) Maximum demand Tariff ... c) KW and KVAR Tariff 10) TOD (Time of Day) Tariff 11) TOU ( Time of Usage) Tariff
asked
May 3, 2020
by
anonymous