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Battery electrolyte is a mixture of water and
A Lead peroxide.
B Sulfuric acid.
C Lead sulfate.
D All of the above
B Sulfuric acid.
Each cell of a fully charged six cell battery produces:
A 1.75 volts
B 4.2 volts
C 1.2 volts
D 2.1 volts
D
The capacity of a battery is determined by its:
A number of plates.
B size of plates.
C both a and b.
D neither a nor.
C
Battery corrosion may be cleaned with:
A water.
B a solution of baking soda and water.
C water and baking flower.
D kerosene.
c
The conventional theory of current flow says that current flows:
A Randomly.
B Positive to negative.
C Negative to positive.
D None of the above.
B
Thermistors are used to provide information on:
A pressure.
B temperature.
C speed.
D position.
B
A solenoid uses two coils. Their windings are called:
A push-in and pull-out.
B pull-in and push-out.
C push-in and hold-out.
D pull-in and hold-in.
D
The voltage regulator directly controls:
A field current.
B output current.
C stator circuit.
D rectification.
A
A battery that is overcharged can be due to:
A loose alternator drive belt.
B defective regulator.
C high speed driving.
D high resistance in the field circuit.
B
The TPS at idle should read approximately:
A 0.7v to 1.2v.
B 1.2v to 2.0v.
C 3.3v to 3.9v.
D 5.0v.
A
Mass air flow sensors are used by the PCM (Engine Computer) to measure:
A how fast air flows.
B volumetric efficiency.
C air density and volume.
D humidity
c
Sensors that use a three wire and have a 5 volt reference are:
A potentiometers.
B resistors.
C coolant and air temp sensors.
D thermistors.
A
A zerconia exhaust gas oxygen (02) sensor is an example of a:
A variable resistor.
B potentiometer.
C signal generator.
D solenoid.
C
An engine detonation (knock) sensor uses a:
A piezoresistive crystal.
B voltage divider pickup.
C potentiometer.
D thermistor.
A
Which of the following sensors directly measures engine load?
A Coolant sensor (ECT).
B Manifold absolute pressure sensor.
C Throttle position sensor (TP).
D Vehicle speed sensor.
B
A sensor that provides information about position, such as a power seat sensor:
A potentiometer.
B hall-effect switch.
C thermistor.
D thermodiode.
A
The sending unit for an oil pressure warning lamp circuit is a:
A thermistor.
B normally open switch.
c variable resistor.
D normally closed switch.
D
One cycle per __________ equals one hertz:
A second.
B minute.
C revolution.
D any of the above.
A
The magnetic field in an alternator is developed in the:
A stator.
B rotor.
C armature.
D none of the above.
B
High resistance in an alternator output circuit is often caused by?
A a discharged battery.
B a shorted diode.
C loose or corroded conne
D a bad regulator
c