What characteristics describe an ideal switch___________?
Show answer Hide answer
Answer: D. All of these
Explanation
An ideal switch is completely lossless, meaning it dissipates zero power during both its ON and OFF states. It can carry current in any intended direction without voltage drop when closed in the ON state. It blocks all current completely in any direction without leakage when open in the OFF state. An electrical switch is a device used to interrupt or divert the flow of current in an electric circuit. Real-world switches suffer from internal resistance, leakage currents, and switching transition power losses. Theoretical modeling treats ideal switches as perfect mathematical entities to simplify complex circuit analysis.
Option A is incomplete because an ideal switch must also block current perfectly and carry current without drops. Option B is incomplete because it overlooks the lossless nature and zero off-state leakage requirements of an ideal switch. Option C is incomplete because it ignores the lossless conduction property and bidirectional current capability when ON.
- Subject
- Engineering
- Category
- Electrical Engineering
- Topic
- —
- Difficulty
- medium
Related questions
Q1. During voltage commutation between incoming and outgoing semiconductor devices
Show answer Hide answer
Answer: C. No overlapping operation
In idealized instantaneous voltage commutation between semiconductor switches, overlap duration is completely neglected. Assuming instantaneous current transfer means no overlapping operation takes place between incoming...
Q2. What key operational benefits does the IGBT combine_____________?
Show answer Hide answer
Answer: B. BJTs and MOSFETs
The insulated gate bipolar transistor successfully combines the high input impedance of MOSFETs with BJT conduction. MOS gate control provides easy voltage-driven operation while the bipolar output stage ensures low satu...
Q3. If Vc1, Vc2, and Vc3 are the forward breakover voltages of a thyristor corresponding to gate currents Ig1, Ig2, and Ig3, what relation holds________________?
Show answer Hide answer
Answer: B. Vc1 > Vc2 > Vc3 when Ig1 < Ig2 < Ig3.
Higher gate currents reduce the forward breakover voltage required to turn on a thyristor device. Therefore, as gate current increases from Ig1 to Ig3, the corresponding breakover voltages decrease from Vc1 to Vc3. This...
Q4. What thermal and physical properties must materials used for heat sinks possess_____________?
Show answer Hide answer
Answer: D. All of these
Materials used for heat sinks must possess high thermal conductivity to transfer heat away from devices quickly. They require a large surface area exposed to ambient air to maximize convective heat transfer efficiency. T...
Q5. What does the acronym LISN stand for in the context of conducted emission measurement equipment_____________?
Show answer Hide answer
Answer: B. Line impedance stabilization network
Line impedance stabilization network is the correct expanded acronym for LISN in electromagnetic emission testing. A LISN provides a standardized high frequency load impedance for conducted emission measurement equipment...
Q6. What are the primary anthropogenic (man-made) sources of noise_____________?
Show answer Hide answer
Answer: D. All of these
Anthropogenic sources of electrical noise include electric motors generating electromagnetic interference during operation. Switching transients and radio frequency interference from power electronic circuits also contri...