Electrical Engineering (EE) Exam > Electrical Engineering (EE) Questions > Choose the false statement.a)SCR is a bidirec...
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Choose the false statement.
- a)SCR is a bidirectional device
- b)SCR is a controlled device
- c)In SCR the gate is the controlling terminal
- d)SCR are used for high-power applications
Correct answer is option 'A'. Can you explain this answer?
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Verified Answer
Choose the false statement.a)SCR is a bidirectional deviceb)SCR is a c...
It is a unidirectional device, current only flows from anode to cathode.
- An SCR (silicon controlled rectifier) is a four-layer p-n-p-n type device.
- The SCR is having three terminals viz. anode, cathode, and the gate.
- SCR is a four-layer p-n-p-n device that forms three p-n junctions.
Hence Option (A) is correct
For complete chapter Notes on Thyristor click on the link given below:
Most Upvoted Answer
Choose the false statement.a)SCR is a bidirectional deviceb)SCR is a c...
Explanation:
An SCR (Silicon Controlled Rectifier) is a three-terminal semiconductor device that belongs to the thyristor family of devices. It is widely used in electronic circuits for its ability to handle high power levels. Let us understand the given options one by one.
a) SCR is a bidirectional device: False
- An SCR is a unidirectional device, which means it can conduct current only in one direction (from anode to cathode).
- However, it can block the current in the reverse direction, like a diode.
b) SCR is a controlled device: True
- An SCR can be turned on and off by applying a pulse to its gate terminal.
- This makes it a controlled device, as the gate controls the conduction of current through the device.
c) In SCR the gate is the controlling terminal: True
- As mentioned above, the gate terminal is used to control the conduction of current through the device.
- By applying a gate pulse, the SCR can be triggered to start conducting current.
d) SCR are used for high-power applications: True
- Due to its ability to handle high power levels, SCR is widely used in electronic circuits for high-power applications such as motor control, lighting control, power supplies, and so on.
Therefore, the false statement is option 'A', as an SCR is a unidirectional device, not a bidirectional device.
An SCR (Silicon Controlled Rectifier) is a three-terminal semiconductor device that belongs to the thyristor family of devices. It is widely used in electronic circuits for its ability to handle high power levels. Let us understand the given options one by one.
a) SCR is a bidirectional device: False
- An SCR is a unidirectional device, which means it can conduct current only in one direction (from anode to cathode).
- However, it can block the current in the reverse direction, like a diode.
b) SCR is a controlled device: True
- An SCR can be turned on and off by applying a pulse to its gate terminal.
- This makes it a controlled device, as the gate controls the conduction of current through the device.
c) In SCR the gate is the controlling terminal: True
- As mentioned above, the gate terminal is used to control the conduction of current through the device.
- By applying a gate pulse, the SCR can be triggered to start conducting current.
d) SCR are used for high-power applications: True
- Due to its ability to handle high power levels, SCR is widely used in electronic circuits for high-power applications such as motor control, lighting control, power supplies, and so on.
Therefore, the false statement is option 'A', as an SCR is a unidirectional device, not a bidirectional device.
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Choose the false statement.a)SCR is a bidirectional deviceb)SCR is a controlled devicec)In SCR the gate is the controlling terminald)SCR are used for high-power applicationsCorrect answer is option 'A'. Can you explain this answer?
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