lab Activity 12 Ohm's Law-1-1

The 3-phase half-wave rectifier given in the figure is connected to 3-phase 380 380 V 50 Hz network and feeds 20 Ω ohmic load. Plot the average value of the current flowing through the load and the waveform (vdc) of the voltage across the load on the dashed curves given.

A PMMC type meter has a full scale deflection of 10 mA. The resistance of the coil is 30 ohm. Then (1) shunt value for an Ameter of 50 A range and (2) Find the value of series resistance required for the range up to 500 V.

1. What diodes are forward biased? a. D1 b. D2 c. Both 2. The only open circuit is a. R1 side b. R2 side c. Everything is closed d. D2 side 3. R1 and R2 are parallel a. True b. False c. Not applicable

Diodes Are Connected In Series To Share A Total... 21 Question • Two diodes are connected in series to share a total reverse voltage of VD=D 5 KV. Reverse leakage currents of the diodes are ID1=30 mA and Ip2=35 mA. - Find Vp1 and Vp2 for R,=R2=100 k2 - Find R, and R2 for VD1=VD2 R1 VD1 Hint: Is=L,+IRj= I,2+IR2 VD R2 VD2

An AC ammeter is connected in series with the primary winding of T1. What is the expected current reading? An AC ammeter is connected in series with the secondary winding of T1. What is the expected current reading? An AC ammeter is connected in series with R1. What is the expected current reading? NOTE: Idc for HW rectifier = 0.318 * Ipeak = 0.45 * Irms Describe/Explain briefly the purpose/use of the array (series-parallel) connection of the rectifier diodes in the given circuit.

a. If you do not go completely around the loop when applying Kirchhoff’s voltage law, then the algebraic sum of the voltages cannot be determined the algebraic sum of the voltages will always be positive the algebraic sum of the voltages will always be negative the algebraic sum is the voltage between the start and finish points   b. A p -type semiconductor is a semiconductor doped with impurity atoms whose electron valence is +4 pentavalent impurity atoms trivalent impurity atoms

For drowning use Multibism

The schematic is step 7

Please answer iv v vi only And don't take copy

Kindly help with this " material science and engineering " question

In the figure given we have u(t)=10- cosot [V]. We assume the diodes and the A-meter (A) to be ideal. a) Plot the waveform of the current flowing through the A-m in scale. b) What is the reading of the A-m, if it is moving-coil type? A u(t) R1 R2 c) What is the reading of the A-m, if it is moving-iron type? d) Calculate the power factor of the WHOLE structure. 5Ω 10Ω

What are the applications of clamper circuits? Enumerate 3. Provide references.

1- A). Which of the following could be used as a discharge device in an inductive AC circuit? a) resistor b) diode c) metal oxide varistor d) "a" and "c", not "b" B. What is the purpose of a discharge device used in conjunction with opening a highly inductive circuit? a) to minimize the possibility of damage to the circuits insulation as a result of a high induced voltage b) to minimize the possibility of endangering the life of the person opening the controlling switch c) to allow the magnetic field to gradually collapse, thus limiting the value of the self-induced ernf d) all of the above C. The high voltage induced by an inductor when its circuit is opened could be used constructively for a) an automotive ignition system b) an electric fence c) both "a" and "b" d) neither "a" nor "b"

Electrical instrumentation question on Wheatstone bridge:

3a. Please I want a solution of this question with all details. Many Thanks Note: It is preferable to solve by typing.

Q5. For the following center tapped transformer, show the waveform across each half of the secondary winding and across Ri, when a 100 V peak sine wave is applied to the primarywinding. What is the PIV rating must the diode have? (Use constant voltage drop model for the Silicon diode) D1 IN4001 R. V out OV 10 kN D2 IN4001 llle

ii. The controlled single-phase rectifier full-wave bridge rectifier of Figure ii has an RL load with R = 25N and L = 50mH. The source is 240 V rms at 60 Hz. Determine the average load current for a = 15° and a = 750 R v, (@t) = Vm sin(@t)\ Vo L ww all

21 - The first Kirchhoff’s rule is related to ............    A) The sum of the currents at any junction ˃˃ 0  B) The sum of the currents at any junction = 0  C) The sum of the currents at any junction ˂˂ 0  D) The sum of the currents at any junction ≠ 0   E) The sum of the currents at any junction ≈ 0

Q5. For the following center tapped transformer, show the waveform across each half of the secondary winding and across R, when a 100 V peak sine wave is applied to the primarywinding. What is the PIV rating must the diode have? (Use constant voltage drop model for the Silicon diode) D IN4001 R 10 kn IN4001

1. The no-load terminal voltage of a battery is 30 V. The terminal voltage drops to 22 V when supplying a current of 5 A. Determine the emf and the internal resistance of this battery. Ans. r= 1.6 ohm 2. Two identical zinc carbon batteries are available. When connected in series, they supply 0.5 A to a 4 ohm resistor. When connected in parallel, they supply 0.4 A to a 5 ohm resistor. Determine the emf and internal resistance of each battery. Ans. 2.667 V and 3.333 ohm 3. When supplying a current of 5 A, the terminal voltage of a battery is 15 V. The battery is then recharged at a rate of 3 A and the terminal voltage is found to be 21 V. Determine the emf and the Internal resistance of the battery. Ans. 18.75 V and 0.75 ohm 4. A battery with an emf of 12 V and an internal resistance of 0.8 ohm is to be recharged through a 20 V source. (a) show by means of a diagram the connection of the circuit elements. (b) What is the current in the circuit? (c) The recharging current is to be…

IN ALL CALCULATIONS AND THE USE OF THE FOUND VALUES IN THE EQUATIONS, THE PROCESS WILL BE MADE WITH 3 DIGGERS AFTER THE COMMA. Thank you

4) For single-phase half-controlled bridge rectifier shown in the figure : 1. Derive a formula for mean load voltage. 2. Draw the waveforms of Vosis w i3, ių and io assuming highly inductive Load and <=45°. T, 12

60 V D1 D2 2 kohm D4 D3 -60 V Assume that an input signal is applied to the circuit given above, as shown in the figure next to it. Accordingly, answer the following questions. The diodes used are silicon diodes, their operating voltages are 0.7 volts, and can be omitted because their resistance is very small. What are the diodes/diodes active in the negative half-loop? Please type.

A charging circuit that will deliver constant DC current will be designed. The input of the circuit is 220V / 50Hz AC and its outputIt will be 5V / 2A DC.The circuit will consist of 3 parts:AC transformer will reduce the voltage on the inputii. AC rectifier circuit will convert low AC voltage to DCiii. Current source, this part will keep the current at the output constant.You determine the transformer drop rate in the first part. Its output is low voltage ACas the source and design the second and third parts accordingly.

60 V D1 D2 2 kohm D4 D3 -60 V Assume that an input signal is applied to the circuit given above, as shown in the figure next to it. Accordingly, answer the following questions. The diodes used are silicon diodes, their operating voltages are 0.7 volts, and can be omitted because their resistance is very small. What are the diodes/diodes that are active in a positive half-loop? Please type.

Pls show the complete solution. Thank you

A RTD made up of platinum has a resistance of 140 Ohms at temperature 770 °C. a) Find the value of initial resistance RO if a =0.00386 b) Find the value of initial resistance RO if a =0.0385. a.Initial Resistance (RO) = b.Initial Resistance R01 =

investigates and explains in detail the concept of induced current and induced voltage