Electrical Layout drawing Reading
Layout diagram of indoor sub-station
Q1. What is the purpose of distribution panel in indoor sub-station?
Ans1. Distribute power supply to multiple OCB.
Ans1. Distribute power supply to multiple OCB.
Q2. What is the purpose of H.T Panel in indoor sub-station
Ans2. To make & break High Tension supply, receive & distribute HT supply, provide protection against faults, provide metering to monitor various parameters.
Ans2. To make & break High Tension supply, receive & distribute HT supply, provide protection against faults, provide metering to monitor various parameters.
Q3. What is the purpose of L.T Panel
Ans3. To make & break Low Tension supply, receive & distribute LT supply, provide protection against faults, provide metering to monitor various parameters.
Power supplying layout diagram
This offers the possibility of supplying three-phase, as well as single-phase current, to users simultaneously. Supply to buildings can be arranged as in the given example.Q1. What is unbalanced load?
Ans. Connecting load to Same phase, in this diagram three phase motor is unbalanced load.
Q1. How the phase current is determined?
Ans. In a star connection, each phase current is determined by the ratio of phase voltage and load impedance `Z'.
Q2. What is load impedance in this layout diagram?
Ans. 10 Ω
Q1. What is the use of overload relay in food mixer?
Ans. This relay provides protection against overload current.
Q2. What is the purpose of speed control push button in food mixer?
Ans. Using for speed up or down.
Ans. Connecting load to Same phase, in this diagram three phase motor is unbalanced load.
Balanced load in a star connection
Q1. How the phase current is determined?
Ans. In a star connection, each phase current is determined by the ratio of phase voltage and load impedance `Z'.
Q2. What is load impedance in this layout diagram?
Ans. 10 Ω
Schematic diagram of a typical portable 3-speed food mixer
Q1. What is the use of overload relay in food mixer?
Ans. This relay provides protection against overload current.
Q2. What is the purpose of speed control push button in food mixer?
Ans. Using for speed up or down.
layout diagram of pump set
ED 1st Year Other Topics for Electrical Trades
Electrical Trades - Electrician, Wireman, Electroplater, Lift & Escalator Mechanic, Electrician Power Distribution. Select Engineering Drawing 1st Year topic from below.