CRS CRS Robotics Hardware & Mechanical Systems 1

Question 1

What type of actuator is most commonly used in industrial robotic joints?

Accepted Answer

Electric servo motor

Answer

Electric servo motors are most commonly used in industrial robot joints due to their precision, speed control, and repeatability.

Question 2

Which component of a robotic arm directly holds and manipulates workpieces?

Accepted Answer

End effector

Answer

The end effector is the tool or gripper attached at the end of a robotic arm that directly interacts with workpieces.

Question 3

What is the primary function of a harmonic drive in robotic joints?

Accepted Answer

High gear reduction with zero backlash

Answer

Harmonic drives provide high gear reduction ratios with zero backlash, making them ideal for precision robotic joint applications.

Question 4

Which encoder type retains absolute position information even after a power loss?

Accepted Answer

Absolute encoder

Answer

Absolute encoders retain position information even after power loss, providing a unique position value for every shaft angle.

Question 5

What is the Denavit-Hartenberg (DH) convention used for in robotics?

Accepted Answer

Systematic description of robot kinematics

Answer

The DH convention is a standardized method for systematically describing the kinematic chain of a robotic manipulator using four parameters per joint.

CRS - Certified Robotic Specialist Practice Test

CRS - Certified Robotic Specialist Practice Test

CRS CRS Robotics Hardware & Mechanical Systems 1