Practice Test: Question Set - 15
1. At cut off, the Q point is at
- (A) Upper end of
the load line
- (B) Middle of
the load line
- (C) Lower end of
the load line
- (D) Infinity
2. How many types of flow are there in a semiconductor?
- (A) 0
- (B) 1
- (C) 2
- (D) 3
3. The total inductance of a series inductor circuit is:
- (A) Equal to the
sum of the individual inductance values
- (B) Equal
to the sum of the individual inductive-reactance values
- (C) Less than
the value of the smallest inductor
- (D) Equal to the
source voltage divided by total current
4. What form of energy is used for creating static electricity?
- (A) Solar energy
- (B) Mechanical
energy
- (C) Chemical
energy
- (D) Light energy
5. The south pole of a magnet is the one:
- (A) That would
be attracted to the earth’s north magnetic pole
- (B) That has its
molecules arranged in a random pattern
- (C) That would
be attracted to the earth's south magnetic pole
- (D) That would
be repelled by the north pole of another magnet
6. A transformer has a primary voltage of 120 V rms and a secondary voltage of 25 V rms. If the secondary current is 1A rms, what is the primary current?
- (A) 7.8 mA
- (B) 208 mA
- (C) 200 mA
- (D) 300 mA
7. A transistor has how many doped regions?
- (A) 1
- (B) 2
- (C) 3
- (D) 4
8. Which one of the following is a direct statement of Ohm's law?
- (A) The voltage
drop across a resistance is proportional to the value of resistance and the
amount of current flowing through it
- (B) The total
resistance of a parallel circuit is less than the value of the smallest
resistance
- (C) The
algebraic sum of voltages in a loop is equal to zero
- (D) The
algebraic sum of currents entering and leaving a point is equal to zero
9. A device that converts light energy to electrical energy is called a:
- (A) Thermocouple
- (B) Solar cell
- (C) Photodiode
- (D) Photo
transistor
10. Holes are the minority carriers in which type of semiconductor?
- (A) Extrinsic
- (B) Intrinsic
- (C) n-type
- (D) p-type
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