004 - Circuit Components Flashcards by CJ Ottawa

B-004-001-001
A circuit designed to increase the level of its input signal is called:

(a) a modulator
(b) an amplifier
(c) an oscillator
(d) a receiver

B-004-001-001
A circuit designed to increase the level of its input signal is called:

(b) an amplifier

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B-004-001-002
If an amplifier becomes non-linear, the output signal would:

(a) become distorted
(b) be saturated
(c) cause oscillations
(d) overload the power supply

B-004-001-002
If an amplifier becomes non-linear, the output signal would:

(a) become distorted

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B-004-001-003
To increase the level of very weak radio signals from an antenna, you would use:

(a) an RF oscillator
(b) an audio oscillator
(c) an audio amplifier
(d) an RF amplifier

B-004-001-003
To increase the level of very weak radio signals from an antenna, you would use:

(d) an RF amplifier

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B-004-001-004
To increase the level of very weak signals from a microphone you would use:

(a) an RF oscillator
(b) an RF amplifier
(c) an audio oscillator
(d) an audio amplifier

B-004-001-004
To increase the level of very weak signals from a microphone you would use:

(d) an audio amplifier

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B-004-001-005
The range of frequencies to be amplified by a speech amplifier is typically:

(a) 3 to 300 Hz
(b) 300 to 3000 Hz
(c) 300 to 1000 Hz
(d) 40 to 40 000 Hz

B-004-001-005
The range of frequencies to be amplified by a speech amplifier is typically:

(b) 300 to 3000 Hz

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B-004-001-006
Which of the following is not amplified by an amplifier?

(a) Current
(b) Resistance
(c) Power
(d) Voltage

B-004-001-006
Which of the following is not amplified by an amplifier?

(b) Resistance

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B-004-001-007
The increase in signal level by an amplifier is called:

(a) attenuation
(b) amplitude
(c) gain
(d) modulation

B-004-001-007
The increase in signal level by an amplifier is called:

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B-004-001-008
A device with gain has the property of:

(a) amplification
(b) attenuation
(c) oscillation
(d) modulation

B-004-001-008
A device with gain has the property of:

(a) amplification

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B-004-001-009
A device labelled “Gain = 10 dB” is likely to be an:

(a) attenuator
(b) oscillator
(c) audio fader
(d) amplifier

B-004-001-009
A device labelled “Gain = 10 dB” is likely to be an:

(d) amplifier

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B-004-001-010
Amplifiers can amplify:

(a) current, power, or inductance
(b) voltage, current, or power
(c) voltage, power, or inductance
(d) voltage, current, or inductance

B-004-001-010
Amplifiers can amplify:

(b) voltage, current, or power

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B-004-001-011
Which of the following is not a property of an amplifier?

(a) Gain
(b) Loss
(c) Linearity
(d) Distortion

B-004-001-011
Which of the following is not a property of an amplifier?

(b) Loss

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B-004-002-001
Zener diodes are used as:

(a) voltage regulators
(b) current regulators
(c) RF detectors
(d) AF detectors

B-004-002-001
Zener diodes are used as:

(a) voltage regulators

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B-004-002-002
One important application for diodes is recovering information from transmitted signals. This is referred to as:

(a) regeneration
(b) ionization
(c) biasing
(d) demodulation

B-004-002-002
One important application for diodes is recovering information from transmitted signals. This is referred to as:

(d) demodulation

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B-004-002-003
The primary purpose of a Zener diode is to:

(a) regulate or maintain a constant voltage
(b) provide a voltage phase shift
(c) to boost the power supply voltage
(d) provide a path through which current can flow

B-004-002-003
The primary purpose of a Zener diode is to:

(a) regulate or maintain a constant voltage

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B-004-002-004
The action of changing alternating current to direct current is called:

(a) rectification
(b) amplification
(c) transformation
(d) modulation

B-004-002-004
The action of changing alternating current to direct current is called:

(a) rectification

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B-004-002-005
The electrodes of a semiconductor diode are known as:

(a) anode and cathode
(b) gate and source
(c) collector and base
(d) cathode and drain

B-004-002-005
The electrodes of a semiconductor diode are known as:

(a) anode and cathode

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B-004-002-006
If alternating current is applied to the anode of a diode, what would you expect to see at the cathode?

(a) No signal
(b) Steady direct current
(c) Pulsating alternating current
(d) Pulsating direct current

B-004-002-006
If alternating current is applied to the anode of a diode, what would you expect to see at the cathode?

(d) Pulsating direct current

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B-004-002-007
In a semiconductor diode, electrons flow from:

(a) anode to cathode
(b) cathode to anode
(c) cathode to grid
(d) grid to anode

B-004-002-007
In a semiconductor diode, electrons flow from:

(b) cathode to anode

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B-004-002-008
What semiconductor device glows different colours, depending upon its chemical composition?

(a) A light-emitting diode
(b) A fluorescent bulb
(c) A neon bulb
(d) A vacuum diode

B-004-002-008
What semiconductor device glows different colours, depending upon its chemical composition?

(a) A light-emitting diode

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B-004-002-009
Voltage regulation is the principal application of the:

(a) junction diode
(b) light-emitting diode
(c) Zener diode
(d) vacuum diode

B-004-002-009
Voltage regulation is the principal application of the:

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B-004-002-010
In order for a diode to conduct, it must be:

(a) close coupled
(b) enhanced
(c) forward-biased
(d) reverse-biased

B-004-002-010
In order for a diode to conduct, it must be:

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B-004-003-001
Which component can amplify a small signal using low voltages?

(a) A PNP transistor
(b) A variable resistor
(c) An electrolytic capacitor
(d) A multiple-cell battery

B-004-003-001
Which component can amplify a small signal using low voltages?

(a) A PNP transistor

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B-004-003-002
The basic semiconductor amplifying device is the:

(a) tube
(b) transistor
(c) P-N junction
(d) diode

B-004-003-002
The basic semiconductor amplifying device is the:

(b) transistor

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B-004-003-003
The three leads from a PNP transistor are named:

(a) collector, emitter and base
(b) drain, base and source
(c) collector, source and drain
(d) gate, source and drain

B-004-003-003
The three leads from a PNP transistor are named:

(a) collector, emitter and base

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B-004-003-004 If a low level signal is placed at the input to a transistor, a higher level of signal is produced at the output lead. This effect is known as: (a) detection (b) modulation (c) amplification (d) rectification

B-004-003-004 If a low level signal is placed at the input to a transistor, a higher level of signal is produced at the output lead. This effect is known as: (c) amplification

B-004-003-005 Bipolar transistors usually have: (a) 1 lead (b) 2 leads (c) 4 leads (d) 3 leads

B-004-003-005 Bipolar transistors usually have: (d) 3 leads

B-004-003-006 A semiconductor is described as a "general purpose audio NPN device". This would be: (a) a silicon diode (b) a triode (c) a bipolar transistor (d) an audio detector

B-004-003-006 A semiconductor is described as a "general purpose audio NPN device". This would be: (c) a bipolar transistor

B-004-003-007 The two basic types of bipolar transistors are: (a) diode and triode types (b) varicap and Zener types (c) NPN and PNP types (d) P and N channel types

B-004-003-007 The two basic types of bipolar transistors are: (c) NPN and PNP types

B-004-003-008 A transistor can be destroyed in a circuit by: (a) excessive light (b) saturation (c) cut-off (d) excessive heat

B-004-003-008 A transistor can be destroyed in a circuit by: (d) excessive heat

B-004-003-009 In a bipolar transistor, the _____________compares closest to the control grid of a triode vacuum tube. (a) base (b) emitter (c) source (d) collector

B-004-003-009 In a bipolar transistor, the _____________compares closest to the control grid of a triode vacuum tube. (a) base

B-004-003-010 In a bipolar transistor, the _____________compares closest to the plate of a triode vacuum tube. (a) gate (b) collector (c) emitter (d) base

B-004-003-010 In a bipolar transistor, the _____________compares closest to the plate of a triode vacuum tube. (b) collector

B-004-003-011 In a bipolar transistor, the _____________ compares closest to the cathode of a triode vacuum tube. (a) collector (b) base (c) emitter (d) drain

B-004-003-011 In a bipolar transistor, the _____________ compares closest to the cathode of a triode vacuum tube. (c) emitter

B-004-004-001 The two basic types of field effect transistors (FET) are: (a) NPN and PNP (b) germanium and silicon (c) inductive and capacitive (d) N and P channel

B-004-004-001 The two basic types of field effect transistors (FET) are: (d) N and P channel

B-004-004-002 A semiconductor having its leads labelled gate, drain, and source is best described as a: (a) field-effect transistor (b) gated transistor (c) bipolar transistor (d) silicon diode

B-004-004-002 A semiconductor having its leads labelled gate, drain, and source is best described as a: (a) field-effect transistor

B-004-004-003 In a field effect transistor, the ___________ is the terminal that controls the conductance of the channel. (a) gate (b) drain (c) source (d) collector

B-004-004-003 In a field effect transistor, the ___________ is the terminal that controls the conductance of the channel. (a) gate

B-004-004-004 In a field effect transistor, the ___________is the terminal where the charge carriers enter the channel. (a) gate (b) drain (c) emitter (d) source

B-004-004-004 In a field effect transistor, the ___________is the terminal where the charge carriers enter the channel. (d) source

B-004-004-005 In a field effect transistor, the __________ is the terminal where the charge carriers leave the channel. (a) collector (b) source (c) gate (d) drain

B-004-004-005 In a field effect transistor, the __________ is the terminal where the charge carriers leave the channel. (d) drain

B-004-004-006 Which semiconductor device has characteristics most similar to a triode vacuum tube? (a) Junction diode (b) Zener diode (c) Field effect transistor (d) Bipolar transistor

B-004-004-006 Which semiconductor device has characteristics most similar to a triode vacuum tube? (c) Field effect transistor

B-004-004-007 The control element in the field effect transistor is the: (a) source (b) gate (c) drain (d) base

B-004-004-007 The control element in the field effect transistor is the: (b) gate

B-004-004-008 If you wish to reduce the current flowing in a field effect transistor, you could: (a) decrease the reverse bias voltage (b) increase the forward bias voltage (c) increase the reverse bias voltage (d) increase the forward bias gain

B-004-004-008 If you wish to reduce the current flowing in a field effect transistor, you could: (c) increase the reverse bias voltage

B-004-004-009 The source of a field effect transistor corresponds to the _______ of a bipolar transistor. (a) emitter (b) base (c) drain (d) collector

B-004-004-009 The source of a field effect transistor corresponds to the _______ of a bipolar transistor. (a) emitter

B-004-004-010 The drain of a field effect transistor corresponds to the _______ of a bipolar transistor. (a) base (b) source (c) collector (d) emitter

B-004-004-010 The drain of a field effect transistor corresponds to the _______ of a bipolar transistor. (c) collector

B-004-004-011 Which two elements in a field effect transistor exhibit fairly similar characteristics? (a) Source and gate (b) Gate and drain (c) Source and drain (d) Source and base

B-004-004-011 Which two elements in a field effect transistor exhibit fairly similar characteristics? (c) Source and drain

B-004-005-001 What is one reason a triode vacuum tube might be used instead of a transistor in a circuit? (a) It may be able to handle higher power (b) It uses less current (c) It is much smaller (d) It uses lower voltages

B-004-005-001 What is one reason a triode vacuum tube might be used instead of a transistor in a circuit? (a) It may be able to handle higher power

B-004-005-002 Which component can amplify a small signal but must use high voltages? (a) A transistor (b) A vacuum tube (c) An electrolytic capacitor (d) A multiple-cell battery

B-004-005-002 Which component can amplify a small signal but must use high voltages? (b) A vacuum tube

B-004-005-003 A feature common to triode tubes and transistors is that both: (a) have electrons drifting through a vacuum (b) can amplify signals (c) convert electrical energy to radio waves (d) use heat to cause electron movement

B-004-005-003 A feature common to triode tubes and transistors is that both: (b) can amplify signals

B-004-005-004 In a vacuum tube, the electrode that is operated with the highest positive potential is the _________. (a) filament (heater) (b) plate (c) cathode (d) grid

B-004-005-004 In a vacuum tube, the electrode that is operated with the highest positive potential is the _________. (b) plate

B-004-005-005 In a vacuum tube, the electrode that is usually a cylinder of wire mesh is the _______. (a) filament (heater) (b) grid (c) cathode (d) plate

B-004-005-005 In a vacuum tube, the electrode that is usually a cylinder of wire mesh is the _______. (b) grid

B-004-005-006 In a vacuum tube, the element that is furthest away from the plate is the __________. (a) grid (b) filament (heater) (c) emitter (d) cathode

B-004-005-006 In a vacuum tube, the element that is furthest away from the plate is the __________. (b) filament (heater)

B-004-005-007 In a vacuum tube, the electrode that emits electrons is the __________. (a) grid (b) cathode (c) collector (d) plate

B-004-005-007 In a vacuum tube, the electrode that emits electrons is the __________. (b) cathode

B-004-005-008 What is inside the envelope of a triode tube? (a) Argon (b) Air (c) A vacuum (d) Neon

B-004-005-008 What is inside the envelope of a triode tube? (c) A vacuum

B-004-005-009 How many grids are there in a triode vacuum tube? (a) Two (b) Three (c) One (d) Three plus a filament

B-004-005-009 How many grids are there in a triode vacuum tube? (c) One

B-004-006-001 How do you find a resistor's tolerance rating? (a) By reading the resistor's colour code (b) By using Thevenin's theorem for resistors (c) By reading its Baudot code (d) By using a voltmeter

B-004-006-001 How do you find a resistor's tolerance rating? (a) By reading the resistor's colour code

B-004-006-002 What do the first three-colour bands on a resistor indicate? (a) The value of the resistor in ohms (b) The resistance material (c) The power rating in watts (d) The resistance tolerance in percent

B-004-006-002 What do the first three-colour bands on a resistor indicate? (a) The value of the resistor in ohms

B-004-006-003 What would the fourth colour band on a 47 ohm resistor indicate? (a) The value of the resistor in ohms (b) The power rating in watts (c) The resistance material (d) The resistance tolerance in percent

B-004-006-003 What would the fourth colour band on a 47 ohm resistor indicate? (d) The resistance tolerance in percent

B-004-006-004 What are the possible values of a 100 ohm resistor with a 10% tolerance? (a) 90 to 100 ohms (b) 10 to 100 ohms (c) 80 to 120 ohms (d) 90 to 110 ohms

B-004-006-004 What are the possible values of a 100 ohm resistor with a 10% tolerance? (d) 90 to 110 ohms

B-004-006-005 How do you find a resistor's value? (a) By using a voltmeter (b) By using Thevenin's theorem for resistors (c) By using the Baudot code (d) By using the resistor's colour code

B-004-006-005 How do you find a resistor's value? (d) By using the resistor's colour code

B-004-006-006 A club project requires that a resistive voltage divider provide a very accurate and predictable ratio. Out of the list below, which resistor tolerance would you select? (a) 0.1% (b) 5% (c) 10% (d) 20%

B-004-006-006 A club project requires that a resistive voltage divider provide a very accurate and predictable ratio. Out of the list below, which resistor tolerance would you select? (a) 0.1%

B-004-006-007 You need a current limiting resistor for a light-emitting diode (LED). The actual resistance is not critical at all. Out of the list below, which resistor tolerance would you select? (a) 0.1% (b) 5% (c) 20% (d) 10%

B-004-006-008 If a carbon resistor's temperature is increased, what will happen to the resistance? (a) It will stay the same (b) It will become time dependent (c) It will change depending on the resistor's temperature coefficient rating (d) It will increase by 20% for every 10 degrees centigrade

B-004-006-008 If a carbon resistor's temperature is increased, what will happen to the resistance? (c) It will change depending on the resistor's temperature coefficient rating

B-004-006-009 A gold tolerance band on a resistor indicates the tolerance is: (a) 5% (b) 20% (c) 10% (d) 1%

B-004-006-009 A gold tolerance band on a resistor indicates the tolerance is: (a) 5%

B-004-006-010 Which colour band would differentiate a 120-ohm from a 1200-ohm resistor? (a) First band (b) Second band (c) Fourth band (d) Third band

B-004-006-010 Which colour band would differentiate a 120-ohm from a 1200-ohm resistor? (d) Third band

B-004-006-011 Given that red=2, violet=7 and yellow=4, what is the nominal value of a resistor whose colour code reads "red", "violet" and "yellow"? (a) 270 kilohms (b) 274 ohms (c) 72 kilohms (d) 27 megohms

B-004-006-011 Given that red=2, violet=7 and yellow=4, what is the nominal value of a resistor whose colour code reads "red", "violet" and "yellow"? (a) 270 kilohms

004 - Circuit Components Flashcards

(63 cards)