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Questions and Answers
For which of the following topologies can 10BaseT not be used without additional hardware conversion?
For which of the following topologies can 10BaseT not be used without additional hardware conversion?
High voltage windings of transformer have ______ resistivity than the low voltage side.
High voltage windings of transformer have ______ resistivity than the low voltage side.
ACR of conductor have 7 steel wires and 25 aluminum wires can be specified as:
ACR of conductor have 7 steel wires and 25 aluminum wires can be specified as:
The output D in the circuit is:
The output D in the circuit is:
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Cable length is 1000m, time of returning signal is 9.43μsec. What is the speed of wave in the cable?
Cable length is 1000m, time of returning signal is 9.43μsec. What is the speed of wave in the cable?
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The equivalent circuit of induction machine at no load is the same as that of the transformer but with:
The equivalent circuit of induction machine at no load is the same as that of the transformer but with:
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Which of these is not a rule of interaction?
Which of these is not a rule of interaction?
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Within the battery, conventional current flow is:
Within the battery, conventional current flow is:
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Activity on arrow needs to use dummy activities to avoid precedence problem that can happen due to:
Activity on arrow needs to use dummy activities to avoid precedence problem that can happen due to:
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What is the average value of signal v(t) = 5 sin(377t)?
What is the average value of signal v(t) = 5 sin(377t)?
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A 3 phase transformer, 25MVA, 66-12.47kV, delta-wye connected, 8 percent impedance. On the 100 MVA, per unit impedance is most nearly:
A 3 phase transformer, 25MVA, 66-12.47kV, delta-wye connected, 8 percent impedance. On the 100 MVA, per unit impedance is most nearly:
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The voltage range is 0-100V. What type and magnitude of resistance required?
The voltage range is 0-100V. What type and magnitude of resistance required?
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The offset of a particular segment varies from:
The offset of a particular segment varies from:
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The power gain of 30dB is equivalent to which amplification factor?
The power gain of 30dB is equivalent to which amplification factor?
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Study Notes
Alternators and Synchronous Motors
- An alternator is over excited when operating at a leading power factor.
- A synchronous motor is considered over excited when operating at a leading power factor.
Antennas
- A micro antenna is defined as a short antenna, typically used in compact devices.
Project Management
- Fast track scheduling aims to avoid future cost increases during construction.
- Fast tracking means to start the project before design completion.
Harvard Architecture
- The Harvard Architecture is characterized by separate code and data spaces.
Electromagnetism
- The force on a moving charge in a magnetic field is perpendicular to both the direction of the magnetic field and the motion of the charge.
Conductance
- The unit of conductance is the mho, the reciprocal of resistance, which is measured in ohms.
Engineering Education
- ABET stands for Accreditation Board for Engineering and Technology.
Circuit Functions
- For a high-frequency transfer function, the phase shift is -90°.
- A NOR gate outputs HIGH only when all inputs are LOW.
Harmonics and Noise
- The third harmonic frequency can be directly found from the fundamental frequency.
- Noise rejection techniques often involve filtering methods.
Voltage Regulation
- Minimum voltage regulation occurs at a unity power factor.
- High voltage winding in transformers generally has higher resistivity than low voltage windings.
Induction Motors
- In an induction motor, at no-load, slip is typically around 2%.
- When the rotor of an induction motor runs at synchronous speed, the torque produced is zero.
Filters and Signal Processing
- To eliminate DC offset, use a high pass filter.
- An active filter can perform functions such as filtering and amplifying signals.
Diode Functionality
- A Zener diode primarily provides voltage regulation in circuits.
Resistance and Power
- When resistance is decreased to half while applying the same current, heat dissipation is reduced as per Joule's law, resulting in 30J loss for 5s.
Cascading Amplifiers
- In cascade amplifiers, to minimize loading effects, the output impedance of the last stage should be very high.
Communication Systems
- For a communication signal with a bandwidth of 2kHz, it's classified as narrowband.
- The Zener current is crucial for proper operation of Zener regulator circuits.
Signal Wave Analysis
- Velocity of a signal wave in a cable can be derived from the time taken for the signal to return, indicating a speed calculation related to the length of the cable.
Transformer Testing
- Open circuit tests on transformers measure core losses which include hysteresis and eddy current losses.
Current and Magnetic Field Relations
- The magnetic field intensity near a wire carrying current can be found using the formula: H = I / (2πr).
Battery Characteristics
- The traditional flow of conventional current inside a battery runs from the positive electrode to the negative electrode.
Engineering Management
- Managers should engage clients in ensuring that project requirements are continually met through regular progress checking.
Amplification and Signal Gain
- An amplifier with negative feedback will have a lower voltage gain compared to the gain without feedback.
Cable Losses and Capacitors
- Capacitors in parallel configurations will combine to enhance the overall capacitance effectiveness in circuits.
Project Scheduling
- Activity durations in project scheduling impact the minimum time to project completion based on task dependencies.
Definitions of Terms
- Power factor relates to the cosine of the angle between current and voltage; it's essential for calculating power in AC circuits.
These bullet points encapsulate key information and principles across various subjects within Electrical and Electronic Engineering, aiding in effective revision and understanding.
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Description
Test your knowledge with this UPDA Electrical/Electronic Engineering reviewer quiz. It covers key concepts such as alternators, synchronous motors, and micro antennas, providing a solid foundation for electrical engineering students. Challenge yourself and identify the correct answers for various scenarios in electrical engineering.
