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Created by giannini.chambers
over 9 years ago
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Question | Answer |
Illuminance below a light source | I/d² |
Illuminance at an angle from a light source | cos(θ) x I _____________ d² |
Ohm's Law | V=IxR |
Resistive Power | P=VxI P=I²R P=V²/R |
3 phase True Power | P=√3 x VL x IL x cos(θ) |
3 phase apparent power | S=√3 x VL x IL |
Symbol for Inductance | L |
Symbol for Capacitance | C |
Symbol for Resistance | R |
Symbol for Inductive Reactance | XL |
Symbol for Capacitive Reactance | XC |
Equation for Inductive Reactance | 2πfL |
Equation for Capacitive Reactance | 1/(2πfC) |
Equation for Impedance | Z=√(R²+(Xl-Xc)²) |
The names of 8 types of protective device | FUSE MCB MCCB RCBO RCD ACB VCB OCB |
Typical Generation Voltage | 22/25kV |
Typical Transmission Voltages | 132kV/275kV/400kV |
Typical Distribution Voltages | 33kV/11kV |
Equation for Star Voltage | VL=VP x √3 |
Equation for Star Current | IL=Ip |
Equation for Delta Voltage | VL=Vp |
Equation for Delta Current | IL=Ip x √3 |
What value is the SI prefix µ | x10^-6 |
What value is the SI prefix m | x10^-3 |
What value is the SI prefix k | x10^3 |
What value is the SI prefix M | x10^6 |
What value is the SI prefix n | x10^-9 |
What value is the SI prefix p | x10^-12 |
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