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WorksheetsRobotics Unit 5 Review
Total questions: 20
Worksheet time: 10mins
Which of the following is NOT a property of equilibrium?
Sum of the forces = 0.
Sum of the displacements = 0.
The object is at rest.
Sum of the torques = 0.
In a mechanical system comprised of a motor, a gear train, a lifting arm, and a specified load force on the arm, what is the first step in calculating the required gear ratio to lift the load?
Sum the torques of the drive motors.
Sum the forces at the free end of the arm.
Sum the torques about the free end of the arm.
Sum the torques about the arm pivot.
What is the worst-case scenario used to calculate maximum lifting capacity of an arm?
Arm lowered at a 15-degree angle below horizontal.
Arm raised at a 45-degree angle above horizontal.
Arm extended vertically.
Arm extended horizontally.
Which of the following is a method for finding the center of gravity of an object?
Float the object in water.
Find the balance point of the object.
Hang the object in two orientations.
Spin the object and find its axis of rotation.
What is NOT a typical use for a limit switch?
To determine the location of a mechanism.
To protect people from harm.
To protect mechanisms from damage.
To allow human control of a mechanism.
When we are considering three-dimensional motion (motion in the real world), how many degrees of freedom do we consider?
Six translational and three rotational.
Three translational and three rotational.
Six translational and six rotational.
Three translational and six rotational.
In a mechanical system comprised of a motor, a gear train, a moment arm, and a load, which of the following is NOT required to calculate the lifting capacity?
Arm length.
Arm width.
Gear ratio.
Motor torque.
When we are considering two-dimensional motion (motion in a flat plane), how many degrees of freedom do we consider?
One translational and two rotational.
Two translational and one rotational.
One translational and one rotational.
Two translational and two rotational.
What is the equation for calculating torque?
T = force−distance
T = force+distance
T = force/distance
T = force*distance
Which of the following is NOT a way to increase the weight-carrying capacity of a gripper?
Increase the friction coefficient.
Decrease the friction coefficient.
Increase the force.
Change the angle that the force is applied.
A block moving forward or backward along a straight line demonstrates what type of motion?
Parallel
Orthogonal
Translational
Rotational
Which of the following is NOT required information to determine maximum lifting capacity of an arm?
Motor speed.
Gear ratio.
Arm length from the pivot.
Motor torque.
When a force is applied to an object NOT through its center of mass it will:
Rotate only
Not Move
Rotate and Translate
Translate only
For picking up a non-ferromagnetic object with a smooth, flat surface, which of the following is the most appropriate end effector?
Gripper.
Suction Cup.
Magnet.
Hook.
Where is the best place in the program to place the block shown in the picture?
After the input from the sensor needs to be used.
At the end of the program.
In the beginning of the program.
Before the input from the sensor needs to be used.
Given the task of picking up a basket, what would generally be the logical first attempt at an end effector design?
Electromagnet.
Hook.
4-bar linkage.
Mechanical hand.
How do we indicate that a torque is acting in a counterclockwise direction?
there is no method to indicate the direction of a torque
Indicate with a negative sign on the torque
Indicate with a CCW sign on the torque
Indicate with a positive sign on the torque
What type of robotic arm best describes the end effector on the machine in the picture?
gantry
polar
cylindrical
articulated
What type of robotic arm is shown in the picture?
articulated
polar
gantry
cylindrical
How many degrees of freedom are there between the arm and claw of this robot?
4
3
2
1
