This set of CIM Multiple Choice Questions & Answers (MCQs) focuses on “Robot Control System and End Effector”.
1. Which of the following comes under the category of robot controllers?
a) Continuous sequence control
b) End to end control
c) Definite control
d) Limited sequence control
View Answer
Explanation: Robot controllers are classified as limited sequence control, playback with point-to-point control, playback with continuous path control, and intelligent control. Limited sequence control is used for simple tasks like pick and place operations.
2. Playback with continuous path control does not use servo control.
a) True
b) False
View Answer
Explanation: A Limited sequence control does not use servo control for precise positioning of the joints. In playback with continuous path control, position and speed of the manipulator are regulated through servo control.
3. In ______, the controller records sequence of motions into memory.
a) Fore-aft system
b) Playback control
c) Synchronous system
d) Limited sequence control
View Answer
Explanation: In playback control, the controller records sequence of motions, locations, and other parameters in the memory in a given work cycle and then playback the work cycle during program execution.
4. Which of the following control uses mechanical stops?
a) Limited sequence control
b) Playback with continuous path control
c) Intelligent control
d) Playback with point to point control
View Answer
Explanation: Limited sequence control is a simple and less expensive control system. It involves setting limits or mechanical stops for each joint. The number of points which can be programmed into a sequence of movements is limited.
5. Playback robot with continuous path control can be used for point to point control too.
a) True
b) False
View Answer
Explanation: Controller for playback with continuous path control has larger memory capacity than point to point control. In point to point playback control, only the location (x, y, z) is controlled. In playback with continuous path control, the location and velocities are simultaneously controlled to achieve the desired path.
6. ____________ is situated at the end of manipulator’s wrist.
a) Actuator
b) Limit switch
c) End effector
d) Divider
View Answer
Explanation: End effectors are used by a robot to perform the required task by interacting with the object. End effectors are classified as grippers and tools. Grippers are used to grasp objects. Operations are performed by the tools.
7. Which of the following grippers have suction cups to hold flat objects?
a) Magnetized grippers
b) vacuum grippers
c) Adhesive grippers
d) Hooks
View Answer
Explanation: In vacuum grippers, objects are lifted by creating a vacuum. The vacuum is generated by a vacuum blower or pump. Vacuum grippers are suitable for handling flat surface parts and are used in automobile industries, packaging industries, etc.
8. Mechanical grippers consists of _________ to grasp objects.
a) Magnets
b) Fingers
c) Tubes
d) Toes
View Answer
Explanation: Mechanical grippers have two, three, or multiple fingers that are actuated by the controller to hold objects. Dual grippers have two gripper devices in one end effector that reduces the work cycle time.
9. Which of the following end effectors comes under the category of grippers?
a) Spot welding gun
b) Rotating spindle
c) Scoops
d) Heating torch
View Answer
Explanation: Scoops are used to handle materials in liquid or powder form. Scoops are simple mechanical devices, but there is a risk of spilling of material during handling. Spot welding gun, heating torch, ladle, water-jet cutter, etc. come under the category of tools.
10. Which of the following grippers grasps objects by sticking?
a) Hooks
b) Adhesive gripper
c) Sticker
d) Mechanical gripper
View Answer
Explanation: Adhesive grippers have adhesive substance to grasp the objects and are suitable for light parts. Magnetized grippers are used for holding ferrous parts. Hooks are used for loading and unloading parts by overhead conveyors.
Sanfoundry Global Education & Learning Series – CIM.
To practice all areas of CIM, here is complete set of Multiple Choice Questions and Answers.
