- A. Less than
- B. Equal to
- C. More than
- D. None of the above
Power Electronics
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To turn on UJT, the forward bias on the emitter diode should be ______ the peak point voltage.
-
A triac is a ______ switch.
- A. Bidirectional
- B. Unidirectional
- C. Mechanical
- D. None of the above
-
After peak point, the UJT operates in the ______ region.
- A. Cut-off
- B. Saturation
- C. Negative resistance
- D. None of the above
-
A triac is equivalent to two SCRs_____.
- A. In parallel
- B. In series
- C. In inverse-parallel
- D. None of the above
-
When the temperature increases, the intrinsic stand off ratio_____.
- A. Increases
- B. Decreases
- C. Essentially remains the same
- D. None of the above
-
A UJT is sometimes called ______ diode.
- A. Low resistance
- B. High resistance
- C. Single-base
- D. Double-base
-
When the temperature increases, the inter-base resistance (RBB) of a UJT_____.
- A. Increases
- B. Decreases
- C. Remains the same
- D. None of the above
-
A diac has _____ terminals.
- A. Two
- B. Three
- C. Four
- D. None of the above
-
The normal way to turn on a diac is by_____.
- A. Gate current
- B. Gate voltage
- C. Breakover voltage
- D. None of the above
-
The triac is_____.
- A. Like a bidirectional SCR
- B. A four-terminal device
- C. Not a thyristor
- D. None of the above