Font size
WorksheetsQUIZ 2 - CHAPTER 3 & 4
Total questions: 20
Worksheet time: 41mins
Select THREE (3) elements of machine mechanism
Translation or Linear Motion
Rotational Motion
Mechanical Work and Power
Force
Which of the following statements is TRUE about Linear Motion
Motion in a straight line.
Measured in either angular velocity.
The strength of linear motion is known as the torque.
Most basic of all motions.
Rotary motion is motion in a __________
Circle
Straight
Linear
Translation
Which of the following statements is TRUE about Rotational Motion
Motion in a straight line
It is the starting point for many mechanisms
Most basic of all motions
Motion is measured in speed and direction
Please choose THREE (3) concepts of motion conversion
Rotary to rotary motion conversion
Rotary to linear motion conversion
Mechanical work
Linkages
Which of the following statements is TRUE about Worm Gear.
More compact than other types of gears because their reduction ratio is based on the number of gear teeth alone.
Useful when the direction of a shaft's rotation needs to be changed.
The simplest and most common type of gear.
Easy to manufacture and suitable for a wide range of applications.
Gear is use to change the direction or speed of movement, but changing the speed of rotation inversely affects the force transmitted.
TRUE
FALSE
You want to go for an uphill easily using a bike. What is the RIGHT statement for the situation above?
You use a smaller size for the front sprocket to go for an uphill easily.
You use a bigger size for the front sprocket to go for an uphill easily.
You use the same size for the front and back sprocket.
You only use one sprocket to go for an uphill easily.
A _________ is a device used to connect two shafts together at their ends for the purpose of transmitting power.
Gear
Linkages
Coupling
End effector
Please choose TWO (2) examples for the rotary to rotary motion conversion
Belt and Pulley
Lead Screw
Rack and Pinion Gear
Bevel Gear
There are two main types of the end-effector; tools and gripper. Please choose THREE (3) types of the unilateral gripper.
Vacuum Pad Gripper
Pressure Pad Gripper
Magnetic Pad Gripper
Fluid Pad Gripper
Choose the RIGHT statement for principles of stepper motor operation.
Have several electromagnetic coils that must be powered sequentially to make the motor turn, from one position to the next position.
The rotor of the motor produces torque from the interaction between the magnetic field in the stator and rotor.
Allows the shaft to move a precise number of degrees each time a pulse of electromagnetic force is sent to the motor.
The strength of the magnetic fields is disproportionate to the amount of current sent to the stator and the number of turns in the windings.
Phase-current diagram above for a stepper motor controller in _______ step mode operation.
Micro
Full
Quarter
Half
Please choose THREE (3) basic types of stepper motor.
Variable-reluctance
Electric panel
Permanent-magnet
Hybrid
The Permanent-Magnet stepper motor requires no “teeth” as are typically found in the variable reluctance (VR) stepper motor.
TRUE
FALSE
Which of the following statements is NOT TRUE about Brushless DC Motor (BLDC)
The BLDC motor has power-saving advantages relative to other motor types.
The coils of BLDC are not located on the rotor but fixed in place on the stator.
Rotor position for BLDC is sensed using Hall-effect sensors embedded into the stator.
Because the coils of BLDT are moving, there is no need for brushes and a commutator.
Please choose THREE (3) steps mode operation in stepper motor.
Full Step Mode
Quarter Step Mode
Half Step Mode
Micro Step Mode
Which one of these is the limitations when using fluid power for power transfer mechanism.
Danger resulting from excessive pressure.
Transmission of large forces using small components.
Start-up under heavy load.
Precise positioning.
Which of the following statements is NOT TRUE about Pneumatic System?
Use of compressed air to transmit power or motion.
Simple construction.
Can be stored in and remove from a reservoir or cylinder.
Very slow working medium.
Powered by fractional horsepower permanent-magnet stepper motors, these linear actuators are capable of positioning light loads.
TRUE
FALSE
