Robotic Arm and Trajectory Quiz

Which of the following statements best describes a robotic arm?

• A collection of rigid links connected by joints

• A device that can only move in a straight line

• A mechanism that uses wheels instead of hinges

• A closed kinematic chain specialized for drilling

Which of the following is not a primary component of a robotic arm?

• Controller

• End effector

• Power supply (battery pack)

• Drives

Which joint type in robotic arms allows linear (sliding) motion?

• Revolute joint

• Prismatic (linear) joint

• Universal joint

• Twisting joint

In industrial settings, the most common actuator type for robotic arm joints is:

• Regular DC motors without feedback

• Stepper motors (or servomotors)

• Internal combustion engines

• Liquid-fueled rocket thrusters

Which of the following best describes a Cartesian robot arm?

• It is equipped with a spherical work envelope.

• It moves linearly along the X, Y, and Z axes.

• It has no prismatic joints.

• It always features six degrees of freedom.

Collaborative robots (Cobots) are primarily designed for:

• High payload, high-speed operations with no human presence

• Completely autonomous work with no human supervision

• Maintaining maximum safety while working side by side with humans

• Only hobbyist use and cannot be used in factories

A SCARA robot arm is named for its “Selective Compliance…” which means:

• It is designed to always move in 3D arcs

• It has limited flexibility in certain directions

• It only uses prismatic joints

• It cannot handle repetitive tasks

Which of the following is true about a 6-axis articulated robot?

• It can only move along one axis at a time.

• It has exactly three revolute joints.

• It can position its end-effector at any point in 3D space and orient it in any required angle (roll, pitch, yaw).

• It cannot perform pick-and-place tasks.

Degrees of Freedom (DOF) in the context of robotic arms refers to:

• The number of joints in the arm that can move independently

• The overall mass of the robot

• The type of programming language the robot uses

• The maximum number of parts the arm can hold at once

Which statement best describes forward kinematics?

• Determining the joint angles required to place the end effector at a desired location

• Calculating the end effector’s location given known joint angles

• Using feedback controllers to keep the robot’s movement stable

• Performing real-time vision tracking with the robot’s camera