QUESTION 16

in 1000 words discus the campus’ load profile?

based on the given information or Context below,

Context:

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:

i. Explain how to evaluate the correct combination of RL and CL for appropriate filter efficiency. ii. Suggest three (3) alternative designs if the output voltage is to be used to drive electronics with various input voltages. (V

Match the following concepts related to optical switches.

Brief discuss the operation of a split phase single phase single induction motor with respect to its construction, current relationship and torque characteristics. Illustrate your answer by means of diagram

A 400V, 2 pole, 50 Hz, three-phase induction motor is drawing 60 A at 0.85 PF lagging. The stator copper losses are 2 kW, the stator core losses are 1.8 kW and rotor copper losses are 700 W. The friction and windage losses are 600 W, the stray loss 100 W, and rotor core loss 100 W.
Find the following quantities:
a. The air gap power.
b. The developed mechanical power.
c. The output power.
d. The efficiency of the motor.
e. The rotor speed when the slip is 2 %. Sketch the power flow diagram and enter all data.

For 345 KV, a three conductor per phase are to be used at 0.30 meters per conductor in a flat horizontal layout. The distance between the centers of each bundle is 4 meters in a delta configuration. GMR for the conductors is 0.012 m

Find:

GMD, L, and XL

Why proper lighting is important and why lumen method is very useful for a effective buildings.Besides ,how can this lumen method help in terms of the uses.

SUBJECT: MECHANICAL AND ELECTRICAL SYSTEMS

What is a two complements overflow, what is a signed overflow, what is an unsigned overflow, what is a carry and what is a borrow. Please feel free to use your own examples. Thank you very much.

A 1200 kW, 550 V DC generator has a terminal voltage of 500 V at rated current. It is being driven at a speed of 400 rpm. The armature resistance is 0.0009 Ω.
a. Determine the armature voltage.
b. Determine the developed torque.
c. Determine the armature copper loss.

Consider a message signal m(t) with bandwidth W = 5.86 kHz. This signal is applied to a product modulator, together with a carrier wave c _t = cos(210000πt) producing the DSB-SC modulated wave s(t). This modulated wave is next applied to a coherent detector producing an output signal y(t). The coherent detector consists of a product modulator that multiplies s(t) by c _r = 2cos(222000πt) and a low pass filter which has a cut off frequency 21 kHz. The output of the coherent detector y(t) would be

Make a ladder logic circuit industry!