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COSC 325 - MEP - Exam 2 Questions with Detailed
Verified Answers
When does an incandescent lamp usually fail? Ans: ✓ ✓ ✓ When switched on
True or False: A standard incandescent lamp converts most electrical energy input to light. Ans: ✓
✓ ✓ False
What is true for illuminance? Ans: ✓ ✓ ✓ It decreases as distance to a light source increases
What is/are the letter(s) mostly used at the beginning of a code to identify fluorescent lamps? Ans:
✓✓✓ F
What is the equivalent of zero degree Kelvin in Celsius? Ans: ✓ ✓ ✓ -273 degrees
What is the velocity of light in kilometers/second? Ans: ✓ ✓ ✓ 300,000
What does not play any role in defining a visual task? Ans: ✓ ✓ ✓ Lamp Life
What is the range of wavelengths (in nanometers) of visible light? Ans: ✓ ✓ ✓ 380-770
Cone sensors in human eyes respond to what colors? Ans: ✓ ✓ ✓ Red, Green, and Blue
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What CRI value is assigned to daylight? Ans: ✓ ✓ ✓ 100
What is meant by power factor? Ans: ✓ ✓ ✓ It is an index for quantifying lagging current
What is not true about AC power? Ans: ✓ ✓ ✓ Line losses are high for AC power transmission
Power demand charges for a building are based on: Ans: ✓ ✓ ✓ Largest load connected during any
15-minute time period
What is power? Ans: ✓ ✓ ✓ The rate at which a work is done
How can glare problems be minimized? Ans: ✓ ✓ ✓ By increasing background brightness, reducing
source brightness, or shielding the source
What is a magnetic field? Ans: ✓ ✓ ✓ An area of electrical influece
What can be done for improving power factor? Ans: ✓ ✓ ✓ Use capacitors
How many times an AC generator drive rotates per second? (This is with reference to power
generation in the United States.) Ans: ✓ ✓ ✓ 60
True or False: Light fixtures (luminaires) in large rooms will have a lower coefficient of utilization
than the same fixtures (luminaires) in small rooms) Ans: ✓ ✓ ✓ False
How would you provide grounding to the electrical system of a building? Ans: ✓ ✓ ✓ By grounding
the neutral conductor
What is the voltage at which power is provided to duplex outlets in residential buildings? Ans: ✓ ✓
✓ 120
© Get it right 2025 Getaway - Stuvia US All rights reserved
COSC 325 - MEP - Exam 2 Questions with Detailed
Verified Answers
When does an incandescent lamp usually fail? Ans: ✓ ✓ ✓ When switched on
True or False: A standard incandescent lamp converts most electrical energy input to light. Ans: ✓
✓ ✓ False
What is true for illuminance? Ans: ✓ ✓ ✓ It decreases as distance to a light source increases
What is/are the letter(s) mostly used at the beginning of a code to identify fluorescent lamps? Ans:
✓✓✓ F
What is the equivalent of zero degree Kelvin in Celsius? Ans: ✓ ✓ ✓ -273 degrees
What is the velocity of light in kilometers/second? Ans: ✓ ✓ ✓ 300,000
What does not play any role in defining a visual task? Ans: ✓ ✓ ✓ Lamp Life
What is the range of wavelengths (in nanometers) of visible light? Ans: ✓ ✓ ✓ 380-770
Cone sensors in human eyes respond to what colors? Ans: ✓ ✓ ✓ Red, Green, and Blue
© Get it right 2025 Getaway - Stuvia US All rights reserved
, Click here for more: Scholars nexus
What CRI value is assigned to daylight? Ans: ✓ ✓ ✓ 100
What is meant by power factor? Ans: ✓ ✓ ✓ It is an index for quantifying lagging current
What is not true about AC power? Ans: ✓ ✓ ✓ Line losses are high for AC power transmission
Power demand charges for a building are based on: Ans: ✓ ✓ ✓ Largest load connected during any
15-minute time period
What is power? Ans: ✓ ✓ ✓ The rate at which a work is done
How can glare problems be minimized? Ans: ✓ ✓ ✓ By increasing background brightness, reducing
source brightness, or shielding the source
What is a magnetic field? Ans: ✓ ✓ ✓ An area of electrical influece
What can be done for improving power factor? Ans: ✓ ✓ ✓ Use capacitors
How many times an AC generator drive rotates per second? (This is with reference to power
generation in the United States.) Ans: ✓ ✓ ✓ 60
True or False: Light fixtures (luminaires) in large rooms will have a lower coefficient of utilization
than the same fixtures (luminaires) in small rooms) Ans: ✓ ✓ ✓ False
How would you provide grounding to the electrical system of a building? Ans: ✓ ✓ ✓ By grounding
the neutral conductor
What is the voltage at which power is provided to duplex outlets in residential buildings? Ans: ✓ ✓
✓ 120
© Get it right 2025 Getaway - Stuvia US All rights reserved
