| Q. | Which of the following device should be used as a switch in a low power switched mode power supply (SMPS)? |
|---|---|
| A. | GTO |
| B. | BJT |
| C. | MOSFET |
| D. | TRIAC |
https://www.youtube.com/watch?v=riDVtIcxLXU
Which of the following devices should be used as a switch for low power and high-frequency application?
MOSFET is a most suitable device as high-frequency switch cause of low switching loss in it.
What all can be used as a switching device in SMPS?
Inverter consisting of switching devices such as MOSFETs. Transformer. Output rectifier and filter. Feedback and control circuit.
Which of the following is used for SMPS?
The step-down transformer used in linear supply is bulky while in SMPS the step-down transformer is light in weight.
Detailed Solution.
| PARAMETERS | LINEAR POWER SUPPLY | SWITCH MODE POWER SUPPLY (SMPS) |
|---|---|---|
| Applications | Used in Audio frequency applications and RF applications. | Used in chargers of mobile phones, DC motors, etc. |
Which of the following devices should be used as a switch for high power and high voltage application GTO Mosfet triac thyristor?
The explanation: Thyristor is used for high power applications but it has a limited frequency range and cannot be used at high frequencies. A thyristor is a unidirectional, bipolar and semi-controlled device.
Which of the following devices should be used as a switch?
Which of the following device should be used as a switch in a low power switched mode power supply (SMPS)?
| Q. | Which of the following devices should be used as a switch for high power and highvoltage application? |
|---|---|
| B. | MOSFET |
| C. | TRIAC |
| D. | Thyristor |
| Answer» d. Thyristor |
Which of the following devices should be used as a switch in a low power switched mode power supply SMPS Mcq?
The following devices can be used as switching mode DC power supplies: Flyback converter. Push-pull converter. Half-bridge converter.
What is the switching frequency of SMPS used in computer?
between 20 and 200 kHz
Basic operation of a switch mode power supply (isolated)
This causes the input voltage to appear at the primary winding as pulses at the switching frequency of between 20 and 200 kHz.
What is work SMPS?
Like other types of power supply, a SMPS power supply transfers power from a source — usually an AC outlet — to a DC device. What sets the SMPS apart is its ability to regulate the output voltage. It can increase or decrease the output voltage to maintain a constant output regardless of changes in load.
What is function of SMPS?
SMPS is the abbreviation of switching mode power supply, a kind of high-frequency power conversion device and a power supply device. Its function is to convert a level of voltage to the voltage or current required by the client through different forms of architecture.
Which is the most commonly used low voltage switching regulators?
silicon steel EI butt stack
12. Which is the most commonly used low voltage switching regulators? Explanation: The silicon steel EI butt stack exhibits high permeability high flux density and ease of construction and mounting therefore, it is most commonly used in low voltage switching regulators.
Which power device is used for switching purpose in computer SMPS Mcq?
Explanation: SMPS (Switching mode power supply) are based on the chopper principle. The output dc voltage is controlled by varying the duty cycle of the chopper circuit.
Which of the following devices used in the rotating type UPS system to supply the mains?
Explanation: Alternator is used in the rotating type UPS system to supply the mains.
Which of the devices should be used as a switch for high power and high voltage application?
On the occasion of high voltage application, we can use cascade technology which ensure capacity to meet requirements. Another circuit is that combining power electronic switch and circuit breaker to achieve high voltage quick switching. Shown as figure 1(b), triac and circuit breaker are used together.
Which of the following device can be used as single phase static AC switch?
Explanation: Both GTO and transistor can be used as a dc static switch. 9. A single-phase ac switch is used in between a 230 V source and load of 2 kW and 0.8 lagging power factor. Determine the rms current rating required by the SCR.
Which of the following device is used for high power application?
The different devices used in chopper are: Low power application: GTO, IGBT, Power BJT, Power MOSFET etc. High power application: Thyristor or SCR.
Which device can be used in a chopper circuit?
4. Which device can be used in a chopper circuit? Explanation: All of the devices which can be used as a switch can be used in a chopper. Explanation: It is a high speed on/off semiconductor switch.
Which among the following devices is the most suited for high frequency applications?
Which among the following devices is the most suited for high frequency applications? Explanation: MOSFET has the least switching losses among the rest of the devices.
Which of the following devices does not belong to the transistor family?
Which of the following devices does not belong to the transistor family? Explanation: GTO is gate turn off transistor, it belongs to the Thyristor family.
How select frequency is selected for SMPS?
Summary
- With higher switching frequency, noise is easier to control (via filtering), but in general the frequency should be adjusted according to the noise characteristics and requirements of each system.
- Higher frequency leads to lower efficiency.
Which signal is used to switch on power supply unit?
Definition: SMPS, an acronym for Switch Mode Power Supply is a type of power supply unit that produces regulated dc output by using semiconductor switching techniques. Basically, here the regulated dc output signal is converted form of ac or dc unregulated input signal.
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