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Questions in this quiz (9)
11. In an unbiased p-n junction, current flow is
- Adue to the diffusion of minority carriers only
- Bzero, because no charges are crossing the junction
- Czero, because equal but opposite currents are crossing the junction
- Adue to the diffusion of minority carriers only
22. A germanium diode is used for.
- Arectification.
- Bvoltage stabilization.
- Cmodulation
- Arectification.
33. Why is a diode put in parallel with an LED?.
- ATo protect it from AC.
- BSo it will work only above a certain voltage.
- CSo it will work only below a certain voltage.
- ATo protect it from AC.
44. When testing the forward bias of a diode with a multimeter.
- A)the positive lead of the ohmmeter is placed on the anode.
- B)it does not matter which terminal the positive lead of the ohmeter is placed.
- Cthe positive lead of the ohmmeter is placed on the cathode.
- A)the positive lead of the ohmmeter is placed on the anode.
55 Which of the following describes the characteristics of a Thyristor?.
- AHigh voltage handling.
- BHigh power handling.
- CHigh current handling.
- AHigh voltage handling.
66 . Light Emitting Diodes (LEDs).
- Aemit light of only one wavelength dependent on type.
- Bhave very wide viewing angles.
- C)are easily damaged if forward biased b more than 5V.
- Aemit light of only one wavelength dependent on type.
7 8 What does the circuit shown below do?
- AFull wave rectifier
- BVoltage doubler
- CHalf wave rectifier
- AFull wave rectifier
89 This symbol is.
- A)a transistor
- Ba diode.
- Ca triac.
910. Thermal runaway in a transistor is caused by
- Aexcessive heat causing maximum current flow
- Bexcessive heat causing minimum current flow
- Clow heat causing minimum current flow
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- Quiz on Untitled, created by jbenjamin on 29/08/2014.
- Author
- jbenjamin
- Language
- English
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