Literature review on the different types of protective relays used for the protection of radial systems.

explain the operation of potentiometric transducer

Problem 4. (10 pts) Voltage amplifiers are available with Avoc = 8 V / V, Rin = 1.8 kΩ, Ro = 850Ω. With a 12V DC power source, each amplifier consumes 1.5 mA average current.

a.how many amplifiers does it need to connect a cascade to obtain at least gain a voltage of 1000 with a load resistance of 1.0kΩ?

b. What is the voltage gain Av obtained? (Answer with a whole number rounded)

c. For the cascade connection, find the open circuit voltage gain. (Respond with a rounded integer)

d. If you have a 1.5 mV input, What is the efficiency of the equivalent amplifier?

e. Find the transconductance of the entire circuit.

Explain the power balance in an induction motor.

The Voltage amplifiers are available with Avoc = 8 V / V,
Rin = 1.8 kΩ, Ro = 850 Ω. With a 12V DC power source, each amplifier
consumes 1.5 mA average current.

a. How many amps do you need to cascade to get so
minus a voltage gain of 1000 with a load resistance of 1.0 kΩ?
b. What is the voltage gain Av obtained? (Answer with an integer number
rounded)
c. For the cascade connection, find the open circuit voltage gain.
(Answer with a rounded integer)
d. If you have a 1.5 mV input, how efficient is the equivalent amplifier?
and. 
e.Find the transconductance of the complete circuit

Plate values ​​of a three-phase transformer are given below:
1600 kVA, 15 kV / 400 V, 50 Hz, io = 1.2%; ukN = 6%, idle losses 2450 W, rated copper losses of power 14500 W; Dy5.

a) Calculate primary and secondary line and phase currents.

b) Secondary at 75% load in power factor with 0.85 inductance and 0.85 capacity calculate the voltage separately. Compare and interpret the results. capacity at what time of day can the upload be seen? To prevent voltage change What solution should be applied?

c) Calculate the rated operating efficiency and maximum efficiency of the transformer.( Power Factor of b) can be used in c).

d) Draw the fastening group. How is this transformer parallel with the transformer Dy11 connected
run?

e) If this transformer is operated at 60 Hz, which sizes change how?
Your review.

1. design a mod-16 ripple down counter using positive triggered

2. design a synchronous counter to count in the following sequence : 15, 9,, 11, 5, 2, 13, 1

Identify and discuss the role of energy efficiency in residential, commercial, and industrial sectors Discuss the policy actions to be taken to promote energy efficiency programs?

It composed 16K × 16 memory by using two DRAM chips that have 8K capacity. If the row × column matrix is square for the address, how many address lines and how many data lines should each chip have?

Mookodi Enterprise is a business consultancy with 543 employees. They are based in the north of Johannesburg on a 10Ha campus. Mookodi connects to the national grid at 11kV and pays a seasonal industrial low voltage (LV) tariff of 141.67 cents in summer and 165.94 cents in winter. Thirty percent of Mookodi’s employees are based at their clients’ offices and are not permanently based on the campus.

The campus has the following buildings:

• Canteen (Purple)
• Welcome Centre, Gym and Conference Centre (Green)
• Guardhouse (Light blue)
• Main Office Building 1 (Maroon)
• Main Office Building 2 (Dark blue)

Below is the campus’ electricity consumption over the last year:

QUESTION 1

in 800 words discus the campus’ load profile

3- (10 pts) Make a status table for a 3-bit counter that with input x = 1 counts the odd numbers and with input x = 0 counts the even numbers backwards.

Help me please! Thanks!!!

What does a transfer function represent?

What are the poles and zeros of a transfer function?

What is the characteristic polynomial?

What is stability?

What is the condition of stability when the system has been expressed in differential equation form?

What is the condition of stability when the system has been expressed in transfer function?