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Questions and Answers
What is the equivalent of 100 kW in joules per second?
What is the equivalent of 100 kW in joules per second?
- 1,000,000
- 1,000
- 100,000 (correct)
- 10,000
What is the open-circuit voltage of a fully charged lead-acid cell?
What is the open-circuit voltage of a fully charged lead-acid cell?
- 1.8 volts
- 2.5 volts
- 2.2 volts (correct)
- 3.0 volts
What is the KV rating of a surge arrester needed for an 11kV ungrounded system?
What is the KV rating of a surge arrester needed for an 11kV ungrounded system?
- 11kV
- 12kV (correct)
- 10kV
- 13kV
What type of transformer connection is used for three to two phase conversion?
What type of transformer connection is used for three to two phase conversion?
What does a conservator tank in a power transformer intend to minimize?
What does a conservator tank in a power transformer intend to minimize?
Why is a bird not electrocuted when landing on hot transmission lines?
Why is a bird not electrocuted when landing on hot transmission lines?
What is the unit of magnetic field intensity in the CGS system?
What is the unit of magnetic field intensity in the CGS system?
What is the material used for transistors?
What is the material used for transistors?
What is the least efficient power plant?
What is the least efficient power plant?
What is the unconventional unit of mmf in the CGS system?
What is the unconventional unit of mmf in the CGS system?
What is the reason for the presence of ozone as a result of corona being harmful?
What is the reason for the presence of ozone as a result of corona being harmful?
What does an overcurrent relay do?
What does an overcurrent relay do?
What instrument visually shows magnitude and shape of an alternating current signal?
What instrument visually shows magnitude and shape of an alternating current signal?
What is the reason for transformers being rated in KVA instead of KW?
What is the reason for transformers being rated in KVA instead of KW?
What does a space station with communication equipment that synchronizes with the earth's orbit indicate?
What does a space station with communication equipment that synchronizes with the earth's orbit indicate?
What is the equivalent of 100 kW in joules per second?
What is the equivalent of 100 kW in joules per second?
What is the open-circuit voltage of a fully charged lead-acid cell?
What is the open-circuit voltage of a fully charged lead-acid cell?
What type of transformer connections are used for three to two phase conversion?
What type of transformer connections are used for three to two phase conversion?
What is the most probable per unit transient reactance for an alternator rated 100 MW?
What is the most probable per unit transient reactance for an alternator rated 100 MW?
What should be the KV rating of a surge arrester to be used for an 11 kV ungrounded system?
What should be the KV rating of a surge arrester to be used for an 11 kV ungrounded system?
Which of the following is not a standard distribution voltage?
Which of the following is not a standard distribution voltage?
What is the unit of magnetic field intensity in the CGS system?
What is the unit of magnetic field intensity in the CGS system?
What does an overcurrent relay do?
What does an overcurrent relay do?
What is the least efficient power plant?
What is the least efficient power plant?
What is the unconventional unit of mmf in the CGS system?
What is the unconventional unit of mmf in the CGS system?
What is the reason for transformers being rated in KVA instead of KW?
What is the reason for transformers being rated in KVA instead of KW?
What instrument visually shows magnitude and shape of an alternating current signal?
What instrument visually shows magnitude and shape of an alternating current signal?
Which of the following is not a standard distribution voltage?
Which of the following is not a standard distribution voltage?
What does a space station with communication equipment that synchronizes with the earth's orbit indicate?
What does a space station with communication equipment that synchronizes with the earth's orbit indicate?
$1$ watt is equal to how many ergs per second?
$1$ watt is equal to how many ergs per second?
Which material is used for transistors?
Which material is used for transistors?
Study Notes
Electrical Engineering
- 100 kW is equivalent to 100,000 joules per second.
- A fully charged lead-acid cell has an open-circuit voltage of 2.1 volts.
- For an 11 kV ungrounded system, a surge arrester with a KV rating of 15 kV is required.
- Open-delta and T-delta connections are used for three to two phase conversions.
- A conservator tank in a power transformer is used to minimize oil leakage.
Electrical Safety
- A bird is not electrocuted when landing on hot transmission lines because it is not grounded.
- The unit of magnetic field intensity in the CGS system is the oersted.
- Silicon is the material used for transistors.
- The least efficient power plant is a nuclear power plant.
- The unconventional unit of mmf (magnetomotive force) in the CGS system is the gilbert.
Electrical Measurement
- An overcurrent relay detects excessive current in an electrical circuit and initiates a disconnect or alarm.
- An oscilloscope visually shows the magnitude and shape of an alternating current signal.
Electrical Systems
- Transformers are rated in KVA instead of KW because they are designed to handle reactive power in addition to active power.
- A space station with communication equipment that synchronizes with the earth's orbit indicates it is a geosynchronous satellite.
- The most probable per unit transient reactance for an alternator rated 100 MW is 0.2-0.3 pu.
Miscellaneous
- 1 watt is equal to 10^7 ergs per second.
- 230V is not a standard distribution voltage.
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Description
Test your knowledge of electrical engineering with this quiz on various concepts and measurements in the field. From power units to circuit breaker operations, this quiz covers a range of topics.
