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Exam 16: Vehicles With Alternative Power Sourceshybrid and High-Voltage System Service

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Question 31

Multiple Choice

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In the dual-stator, dual-voltage system, dual voltage is produced from a single ____ that has two output voltages.

A) generator
B) solenoid
C) stator
D) alternator

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Question 32

Multiple Choice

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In a PEM fuel cell, which side does the oxygen enter from?

A) Gate
B) Anode
C) Drain
D) Cathode

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Question 33

Multiple Choice

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The high-voltage electronic control unit (HV ECU) controls the two motor generators (MG1 and MG2) and the engine based on ____ demand.

The main advantage of the ISG system is:

Lean burn technology uses high air-fuel ratios to increase ____.

What is one of the newest technologies to emerge from the research and development of the 42-volt system?

The hybrid electric vehicle (HEV) system can use ____ to recover energy that normally would be lost to heat and use it to supplement the power of the engine.

What type of system uses two generators, one that operates at 42-volts while the other operates at 14-volts?

What technology combines oxygen from the air with hydrogen to produce electricity?

____ braking means that the braking energy is turned back into electricity instead of heat.

What are some of the advantages that can be derived from a 42-volt electrical system?

The ____ controls the operation of the system main relay (SMR) to connect and disconnect the power source of the high-voltage system.

A reformer on board a fuel cell powered vehicle is used to produce hydrogen from a fuel sources such as methanol.

In the ISG system the stator is attached to the engine block and coils that are formed by laser-welding copper bars.

Technician A say the inverter converts the voltage from 270 VDC to 14 VDC to recharge the auxiliary battery and to power 12-volt electrical components. Technician B says the convertor converts HV battery DC voltage into three-phase alternating current  (AC) for MG1 and MG2. Who is correct?

In which hybrid vehicle design is there a direct mechanical connection between the engine and the wheels?

After the high-voltage service plug is removed, a minimum of ____ must pass before beginning service on the system.

Describe the basic operating principle of a fuel cell.

In a hybrid vehicle the motor/generator recovers the heat energy used to brake by converting rotational energy into kinetic energy through a system of electric motors and generators.

In a hybrid system, the __________ __________ is a device that stores energy as electrostatic charge and is the primary device in the power supply during hill climbing, acceleration, and the recovery of braking energy.