At room temperature, an intrinsic silicon crystal acts approximately as_______________?

Related Mcqs:

1. At room temperature, an intrinsic semiconductor has_______________?

   A. Many holes only
   B. A few free electrons and holes
   C. Many free electrons only
   D. No holes or free electrons

2. At absolute temperature, an intrinsic semiconductor has________________?

   A. A few free electrons
   B. Many holes
   C. Many free electrons
   D. No holes or free electrons

3. The resistivity of a pure silicon is about _______________?

   A. 100 O cm
   B. 6000 O cm
   C. 3 x 105 O m
   D. 6 x 10-8 O cm

4. In an intrinsic semiconductor, the number of free electrons_____________?

   A. Equals the number of holes
   B. Is greater than the number of holes
   C. Is less than the number of holes
   D. None of the above

5. The strength of a semiconductor crystal comes from______________?

   A. Forces between nuclei
   B. Forces between protons
   C. Electron-pair bonds
   D. None of the above

6. For faithful amplification by a transistor circuit, the value of VCE should______________for silicon transistor?

   A. Not fall below 1 V
   B. Be zero
   C. Be 0.2 V
   D. None of the above

7. For faithful amplification by a transistor circuit, the value of VBE should_____________for a silicon transistor?

   A. Be zero
   B. Be 0.01 V
   C. Not fall below 0.7 V
   D. Be between 0 V and 0.1 V

8. The leakage current in a silicon transistor is about_____________ the leakage current in a germanium transistor?

   A. One hundredth
   B. One tenth
   C. One thousandth
   D. One millionth

9. A silicon transistor is biased with base resistor method. If ß=100, VBE =0.7 V, zero signal collector current IC = 1 mA and VCC = 6V , what is the value of the base resistor RB ?

   A. 105 kO
   B. 530 kO
   C. 315 kO
   D. None of the above

10. A pn junction acts as a__________________?

    A. Controlled switch
    B. Bidirectional switch
    C. Unidirectional switch
    D. None of the above