Chapter 9 - Motors & Engines

What type of motor is commonly used in electric vehicles due to its ability to provide high torque at low speeds?

• AC
• DC
• Three-phase
• Single-phase

What type of engine is commonly used in locomotives to provide mechanical power for propulsion?

• Steam engine
• Diesel engine
• Internal combustion engine
• Electric engine

What type of engine uses the combustion of fuel to generate power through a series of controlled explosions?

• Internal combustion engine
• Steam engine
• Electric engine
• Jet engine

What type of motors run at a fixed speed that is synchronized with the supply of electricity?

• Induction motors
• Universal motors
• DC motors
• Synchronous motors

Which of the following is a common application of a steam engine?

• Aircraft propulsion
• Electric power generation
• Industrial pumps
• Automobile engines

Which of the following is a disadvantage of DC motors compared to AC motors?

• More complex control systems
• Limited speed control
• Lower torque
• Higher efficiency

What type of motor allows for the rotation speed of the motor to be adjusted?

• Single or fixed speed
• DC
• Variable speed
• AC

What type of motor is most commonly used in situations where variable speed or high-torque applications are needed?

• Variable speed
• Single or fixed speed
• DC
• AC

Why are electric motors often preferred?

• Reliability
• Ease of use
• Low maintenance cost
• All of the above

What type of engine is commonly used in aircraft to provide thrust for propulsion?

• Steam engine
• Electric engine
• Jet engine
• Internal combustion engine