EET-126 Lab 3

A step up chopper has an input of 200 volts and output of 250 volts. The blocking period is each cycle is 0.6x10-3 seconds. Find the period of conduction in each cycle and frequency of operation?

How does TP4056 works? What is the purpose of red and blue lights in the components?

QUESTION 1 What practical skills were taught and assessed in you Electronic Engineering lab? Choose one or more correct answers in the following list: A. Soldering electronic components on a PCB B. Working principles of a semiconductor diode. C. Electronic PCB design D. Soldering an IC on a PCB E. De-soldering surface mount component techniques F. Cleaning the soldering iron tip

A 3 phase half wave controlled rectifier has a 3 phase line to line supply voltage of 420 V rms at 50 Hz for 10 ohm and 4 H load. If the firing angle  = 50, then the average output voltage is ______________________.    Answer

2b- Please solve this question in detail. Many Thanks   Note: It is preferable by keyboard typing.

I need the answer as soon as possible

A switch that can conduct positive on-state current, and can block positive or negative off-state voltage is called ___. A. voltage-bidirectional two-quadrant switch B. synchronous rectifier C. single quadrant switch D. four-quadrant switch

What is the best type of rectifier? (Half-wave, Bridge Type Full-wave or Full-wave using center-tapped transformer). Explain your answer.

I have a wooden toy train that runs on wooden tracks. I would like to place two ESP-WROOM-32 Boards on top of the train. Broadcast communication (which involves radio frequency, not Wi-Fi) would help communicate about the train's lateness to five other wooden trains on the same track. Local communication would help communicate to the train station about the train's lateness. I would also need radio frequency Tx-Rx Modules for discharging and undergoing the signal, and repeaters just in case the signal loses power due to long-distance traveling. My wooden train should be automated. It should run at 4 inches per second, keep a minimum distance of 30 seconds away from the other wooden trains, and make a 17-second-long stop every 500 seconds. What's the procedure to connect the components? What's the Arduino code (C++) for this project?

A 3 phase half wave controlled rectifier has a 3 phase line to line supply voltage of 416 V rms at 50 Hz for 13 ohm and 2 H load. If the average output voltage is 210 V then __________________ is the firing angle for this condition.   Answer

What are the applications of limit switch?

Discuss the types of oil circuit breakers.

help

A 3 phase fully controlled rectifier has a 3 phase line to line supply voltage of 410 V rms at 50 Hz for 10 ohm and 1.5 H load. If the firing angle  = 50, then the average output voltage is ______________________.    Answer

From our experiment we used LM555 timer to demonstrate a multivibrator circuit. The following choices are a PIN number and its function of LM555 timer, which one is not correct? PIN 2 - Trigger PIN 7 - Discharge PIN 6 - Threshold PIN 4 - Control Voltage

(c) Sketch a complete flow chart of digital clock circuit by using the terms listed in Figure Q3(c). Display on LCD Sec. Display Min. Display Hour Display & Alarm Figure Q3(c)

5. The value of a resistor R is to be determined using the ammeter-voltmeter setup shown in Figure P28.63. The ammeter has a resistance of 0.500 N, and the voltmeter has a resistance of 20 000 N. Within what range of actual values of R will the measured values be correct to within 5.00% if the measurement is made using the circuit shown in (a) Figure P28.63a and (b) Figure P28.63b? R A V (a) in R A V (b) Figure P28.63

‏What is meant by Excitation Control in a Power System

Automatic circuit breaker – explain principle of operation, design and protective characteristic that they have.

Subject:electronic engineering How BJT acts as a switch?

Q4/   Complete the blank In induction type energy meter, Recording system consists of a set of dials and..................................................?

QUESTIONS 1. Define maximum power point of a solar module. 2. Explain the importance of maximum power point of a solar module. 3. Define maximum power point tracker. 4. What do you conclude from experience

Q. An IGBT switch has a 10 ohms resistive load across 100V supply at a frequency of 10kHz. If the switch duty cycle is (8 = 25%). If the switching times (ON time =1us, OFF time = 2us)Calculate? 4- The energy dissipated during ON state interval. 5-The energy dissipated during turn-off transition. 6- The energy dissipated during OFF state interval.

Don’t copy others work.  Here is only one question.  Don't say multiple question.  Sub: Optoelectronic  Dept:EEE

Using the notation scheme for defining manipulator configurations, draw diagrams of the following robots. Label each joint in the diagram. (i) TVR:TR (ii) VROT:R

What is the meaning of “OFF-  DELAY”  in  Time relay RXKL at AC-operation   (Explain Briefly)

Subject-power electronic Define A.Delay time B.Rise time C.reverse recovery voltage D.spread time.

Which one of the following statement is correct ?   a. Controlled rectifier circuit requires small filters b. Efficiency is better in controlled rectifier circuit c. Switching frequency is not responsible for output ripples in chopper d. Controlled rectifier regenerative braking process is very slow Clear my choice

a.What is an ROC?    b.What is a cold site?    c,What is fault tolerance?

Draw a simple pulse detector (positive-edge) diagram and explain how it works.

The average dc voltage of a half wave rectifier circuit is _______ of the value of the peak input voltage.

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