Solid State Chapter 9 Questions
The most common bias stabilization circuit is the____ bias stabilization circuit.
All the above. Emitter feedback, collector-feedback, and combination.
In both types of BJTs the terminal used is the _______.
All the above. Emitter, base, and collector.
___________ can damage a transistor.
All the above. High voltages, improper connections, and overheating.
_________ is the ratio of collector current(Ic) to bade current(Ib) if a transistor with a constant collector-emitter voltage(Vce)
Current gain
A diode passes current when it is reverse biased.
False
A transistor biased for saturation has the collector-base junction foward biased.
False
A transistor cannot be biased from a single fixed voltage source.
False
Decreasing foward-bias voltage on a base causes the current through a transistor to increase.
False
I'm a collector characteristic curve, the vertical axis indicates Vce.
False
Identifying an NPN and PNP transistor is possible by visual inspection.
False
In any transistor circuit, the base-emitter junction must always be reverse biased and the collector-base junction must always be foward biased.
False
On a good transistor, one test should indicate that the junction has a high resistance when foward biased.
False
When a transistor with a specific shape must be used, a transistor model (TM) number is used for reference.
False
One of the greatest dangers to a transistor is ______, which causes excessive current flow and damage.
Heat
A transistor with a(n) ___________ must be viewed from the bottom.
Index pen
________ is the property of a circuit to oppose a change in current due to energy stored in a magnetic field.
Inductance
To obtain as much information as possible about transistor, a set of ____________ curves can be used.
Operating characteristic
A(n) ________ transistor is formed by sandwiching a thin layer of N-type material between two layers of P-type material.
PNP
___________ indicates the maximum current that can flow in the collector at a particular voltage.
Saturation
BJTs are referred to as bipolar because both the holes and electrons are used as internal carriers for maintaining electron flow.
True
Bias stabilization circuits are designed to counteract the cumulative current increase due to a rise in temperature.
True
Collector characteristic curves are essential in predicting the operating condition of a transistor in a circuit.
True
Current gain in a transistor is symbolized by the Greek letter beta (b).
True
In order to protect the transistor, the maximum power dissipation curve must be considered.
True
In theory, a transistor should last indefinitely.
True
It is impossible to determine whether a transistor is switched ON or OFF just by visual inspection.
True
Mechanical switches have two conditions: open and closed or ON and OFF.
True
One method of limiting the base current in a transistor is to use a series-limiting resistor.
True
The base-emitter junction must be forward biased while the collector-base junction is reverse biased.
True
The primary motivation behind the rapid development of the transistor was to replace mechanical switching.
True
The two types of BJTs are NPN and PNP transistors.
True
Thermistors are also used for bias stabilization.
True
To determine if a transistor is good or bad, a digital multimeter(DMM) or a transistor tester can be used.
True
Transistors are manufactured to perform different functions under a variety of operating conditions.
True
In a transistor base circuit, ___________ indicates the voltage drop across the base-emitter junction.
VBE
In a transistor collector circuit, ________ indicates the collector-emitter voltage.
VCE
In a base test circuit, Vbb provides the forward bias for the _________ -emitter junction.
base
The __________ current is a critical factor in determining the amount of current flow in a transistor.
base
With ________ bias, the amount of base current is dependent upon the value of the limiting resistor and the resistance of the base-emitter junction.
base
A(n) __________ is a three-terminal electronic device that switches or amplifies electrical signals.
bipolar junction transistor
Transistor operating curves on a graph are known as collector _______ curves.
characteristic
A ________ diode is a diode that prevents voltage in one part of the circuit from exceeding the voltage on another part.
clamping
In a collector test circuit, Vcc provides the reverse bias for the _________-emitter junction.
collector
A(n) __________ bias stabilization circuit is created by taking part of the output voltage and feeding it back into the input to return the circuit to normal operation.
collector feedback
The _________ region is the region of a characteristic curve in which a transistor is turned off and no current flows through the collector.
cutoff
A(n) ________ is often used for stabilization instead of a thermistor because its PN junction closely approximates that of a transistor.
diode
A combination bias stabilization circuit is created by both _________-feedback and collector-feedback circuits.
emitter
An emitter-feedback bias stabilization circuit is created by placing a resistor in series with the _______.
emitter
Current _______ is used to describe the operation of a transistor because current changes are more dramatic in a ransostor that voltage changes.
gain
The collector current(Ic) on the vertical axis of a characteristic curve is measured in _______.
milliamps (mA)
A ________ region is the region of a characteristic curve in which maximum current can flow in a transistor circuit.
saturation
A(n) _____ circuit is a circuit in a transmitting device that takes a positive voltage generated by the receiving device and shunts it to a ground, lowering the voltage at the receiver circuit.
sink
__________ instability is a change in bias due to heat.
thermal
A(n) __________ number is a number determined by the manufacturer that represents the shape and configuration of a transistor.
transistor outline
Bias stabilization circuits can be used to protect ________ in addition to heat sinking.
transistors