NCATT EXAM QUESTIONS WITH
CORRECT DETAILED ANSWERS
Thermistor - Answer-What type of transducer changes its resistance when temperature
changes?
Increased - Answer-The thermocoupled transducer will increase its output voltage when
the heat is?
Semi-conductor materials - Answer-Photovoltaic devices are constructed with?
Pressure monitoring - Answer-Variable inductor transducers are frequently used for?
Transducers convert energy from one form to another by sensing change in the
measurand - Answer-What is the purpose of transducers?
Vacuum - Answer-Magnetic permeability is greatest in/through what material?
50% greater than Vcc - Answer-The working voltage of a capacitor is?
Store electrical energy - Answer-What is the purpose of a capacitor
Single shot - Answer-The monostable multivibrator is also known as a
Degenerative - Answer-Using the swamping resistor of thermal stability, what type of
feedback is developed to control the amplifier?
Heat sink - Answer-Which of the following devices is used to dissipate heat in the air?
Direct - Answer-What type of amplifier coupling is used that can amplify DC voltages as
well as AC signals?
180 degress - Answer-In a common collector amplifier, degenerative feedback is how
many degrees out of phase with the input signal?
Greater than one, less than one - Answer-The common base amplifier has a voltage
gain ________ than one, but current gain __________ than one.
Sine wave - Answer-What type of waveform is produced by a sinusoidal oscillator?
, Regenerative feed back - Answer-The basic requirement for sustains oscillations in an
oscillator are a power supply, FDD, amplifier, and _________
PRT of input triggers - Answer-What determines the width of the output pulses in a
bistable multivibrator?
Flip flop/frequency divider - Answer-The bistable multivibrator is also known as:
Square wave or rectangular - Answer-What type of output waveform is produced by an
astable multivibrator?
Free running oscillator - Answer-The astable multivibrator is a:
180 degrees (Q-point is at cutoff) - Answer-With a transistor amplifier operating in class
B, the collector current will flow for ______ of the input signal?
Transformer - Answer-What type of amplifier coupling is used for impedance matching
and circuit isolation?
0-ohms/shorts - Answer-What is the resistance of normally closed contacts when the
relay is de-energized?
The plunger pulled into the coil - Answer-What distinguishes a solenoid from a basic
relay?
The spring - Answer-What part of a basic relay returns the armature to its de-energized
position?
Two - Answer-How many paths of current are required for a holding relay coil?
Band pass - Answer-Transformers are considered te be what kind of filter?
When the person administering CPR becomes physically tired, medical help arrives,
person becomes conscious - Answer-When should a person stop administering mouth
to mouth resuscitation/CPR?
Approved flight manual, STC, aircraft service manual - Answer-When installing
equipment, what references do you use?
Prevent dissimilar metal corrosion - Answer-Why is stainless steel safety wire used with
steel bolts?
Yes - Answer-Can you use .032 safety wire in a .045 hole?
Resistance decreases - Answer-What happens to wire resistance if the cross-section
(area) increases?
CORRECT DETAILED ANSWERS
Thermistor - Answer-What type of transducer changes its resistance when temperature
changes?
Increased - Answer-The thermocoupled transducer will increase its output voltage when
the heat is?
Semi-conductor materials - Answer-Photovoltaic devices are constructed with?
Pressure monitoring - Answer-Variable inductor transducers are frequently used for?
Transducers convert energy from one form to another by sensing change in the
measurand - Answer-What is the purpose of transducers?
Vacuum - Answer-Magnetic permeability is greatest in/through what material?
50% greater than Vcc - Answer-The working voltage of a capacitor is?
Store electrical energy - Answer-What is the purpose of a capacitor
Single shot - Answer-The monostable multivibrator is also known as a
Degenerative - Answer-Using the swamping resistor of thermal stability, what type of
feedback is developed to control the amplifier?
Heat sink - Answer-Which of the following devices is used to dissipate heat in the air?
Direct - Answer-What type of amplifier coupling is used that can amplify DC voltages as
well as AC signals?
180 degress - Answer-In a common collector amplifier, degenerative feedback is how
many degrees out of phase with the input signal?
Greater than one, less than one - Answer-The common base amplifier has a voltage
gain ________ than one, but current gain __________ than one.
Sine wave - Answer-What type of waveform is produced by a sinusoidal oscillator?
, Regenerative feed back - Answer-The basic requirement for sustains oscillations in an
oscillator are a power supply, FDD, amplifier, and _________
PRT of input triggers - Answer-What determines the width of the output pulses in a
bistable multivibrator?
Flip flop/frequency divider - Answer-The bistable multivibrator is also known as:
Square wave or rectangular - Answer-What type of output waveform is produced by an
astable multivibrator?
Free running oscillator - Answer-The astable multivibrator is a:
180 degrees (Q-point is at cutoff) - Answer-With a transistor amplifier operating in class
B, the collector current will flow for ______ of the input signal?
Transformer - Answer-What type of amplifier coupling is used for impedance matching
and circuit isolation?
0-ohms/shorts - Answer-What is the resistance of normally closed contacts when the
relay is de-energized?
The plunger pulled into the coil - Answer-What distinguishes a solenoid from a basic
relay?
The spring - Answer-What part of a basic relay returns the armature to its de-energized
position?
Two - Answer-How many paths of current are required for a holding relay coil?
Band pass - Answer-Transformers are considered te be what kind of filter?
When the person administering CPR becomes physically tired, medical help arrives,
person becomes conscious - Answer-When should a person stop administering mouth
to mouth resuscitation/CPR?
Approved flight manual, STC, aircraft service manual - Answer-When installing
equipment, what references do you use?
Prevent dissimilar metal corrosion - Answer-Why is stainless steel safety wire used with
steel bolts?
Yes - Answer-Can you use .032 safety wire in a .045 hole?
Resistance decreases - Answer-What happens to wire resistance if the cross-section
(area) increases?
