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WorksheetsBrakes and Dynamometers
Total questions: 34
Worksheet time: 35mins
What is a brake?
A device used to stop or slow down a vehicle
A type of engine
A kind of fuel
A vehicle part that increases speed
Brakes are classified into different types based on their working principles and operation. Which of the following is a type of brake based on the friction mechanism?
Mechanical Brakes
Hydraulic Brakes
Friction Brakes
Electric Brakes
Which component of the internal expanding brake rotates with the wheel?
The component that rotates with the wheel in an internal expanding brake is typically the brake drum.
Brake shoe
Brake pad
Master cylinder
The working principle of an internal expanding brake is explained by which of the following?
The brake shoes expand outward to press against the drum.
The brake shoes contract inward to press against the drum.
The brake drum expands outward to press against the shoes.
The brake drum contracts inward to press against the shoes.
Friction brakes use _______ between two surfaces to create resistance and slow down motion.
friction
adhesion
gravity
magnetism
What are the advantages of using drum brakes?
Simple design and cost-effective
Works well in wet conditions
Provides high stopping power
Suitable for high-speed vehicles
What is a limitation of drum brakes?
Overheats quickly under heavy braking
Suitable for high-speed vehicles
Works well in wet conditions
Provides high stopping power
Fill in the blank: External contracting brakes are used in cranes, hoists, winches, and ________.
conveyors
elevators
escalators
bicycles
What is the working principle of an external contracting brake?
Uses a flexible brake band that wraps around a drum
Uses hydraulic pressure to apply force
Uses electromagnetic force to stop the vehicle
Uses air pressure to apply force
A limitation of external contracting brakes is that they provide lower ________ power.
stopping
starting
accelerating
turning
What is a common application of disc brakes?
Used in cars, motorcycles, and industrial machinery
Used in cranes, hoists, winches, and conveyors
Used in bicycles and light vehicles
Used in aircraft and heavy-duty trucks
The function of a caliper in a disc brake system is to:
apply pressure to the brake pads
measure the thickness of the brake disc
cool down the brake system
lubricate the brake components
Which component of the disc brake rotates with the wheel?
A disc brake is more effective in cooling than ________ brakes.
drum
hydraulic
electric
air
One advantage of disc brakes over drum brakes is:
better heat dissipation
lower cost
easier to manufacture
more compact design
What is a dynamometer used to measure?
Speed
Force
Temperature
Pressure
Fill in the blank: A friction dynamometer uses ________ elements to absorb energy from a rotating shaft.
friction
magnetic
hydraulic
pneumatic
Which component of a friction dynamometer measures the reaction force?
What is one application of a friction dynamometer?
Measuring engine power
Calculating fuel efficiency
Determining vehicle speed
Assessing tire wear
What is the working principle of a Fluid (Hydraulic) Dynamometer?
Uses a fluid to absorb energy
Uses eddy currents to generate resistance
Uses a magnetic field to create torque
List the components of a Fluid (Hydraulic) Dynamometer.
Rotor, Stator, Water/Oil Circuit
Piston, Cylinder, Crankshaft
Compressor, Condenser, Evaporator
Gear, Chain, Sprocket
What is one advantage of using a Fluid (Hydraulic) Dynamometer?
High wear and tear
No mechanical wear
Low initial cost
What is a limitation of a Fluid (Hydraulic) Dynamometer?
Simple and easy to use
Requires a cooling system
Low cost
What is the working principle of an Electromagnetic Dynamometer?
Uses a fluid to absorb energy
Uses eddy currents to generate resistance
Uses a magnetic field to create torque
List the components of an Electromagnetic Dynamometer.
Electromagnet, Rotor
Stator, Commutator
Armature, Brushes
Field Coils, Slip Rings
What is one application of the cooling system mentioned in the text?
List two advantages of the cooling system as described in the text.
The cooling system increases efficiency and reduces wear.
The cooling system is cost-effective and easy to maintain.
The cooling system enhances performance and prolongs engine life.
The cooling system is environmentally friendly and energy-saving.
What is one limitation of the cooling system?
Which braking system uses expanding shoes inside a drum?
Fill in the blank: The external contracting brake uses a _______ band around the drum.
steel
rubber
plastic
leather
The components of a disc brake are:
Caliper, Rotor, Brake Pads, Brake Lines
Piston, Cylinder, Brake Drum, Brake Shoes
Master Cylinder, Brake Fluid, Brake Pedal, Brake Booster
Wheel Cylinder, Brake Drum, Brake Shoes, Return Springs
Which braking system is known for high performance?
Fill in the blank: Friction brakes use _______ contact.
friction
magnetic
hydraulic
electric
What does a dynamometer measure?
