Robot Classification and Specification MCQ Quiz - Objective Question with Answer for Robot Classification and Specification - Download Free PDF

Last updated on Apr 17, 2025

Latest Robot Classification and Specification MCQ Objective Questions

Robot Classification and Specification Question 1:

When programming a robot, what is the primary function of the 'OUTPUT' keyword?  

  1. To send a signal to an actuator or motor. 
  2. To update the robot's internal software.  
  3. To receive data from the robot's sensors. 
  4. To perform data analysis on the robot's input. 

Answer (Detailed Solution Below)

Option 1 : To send a signal to an actuator or motor. 

Robot Classification and Specification Question 1 Detailed Solution

Explanation:

'OUTPUT' keyword:

  • In robotics, actuators and motors are essential components that convert electrical signals into physical movement or action.
  • The 'OUTPUT' keyword is used to send these electrical signals from the robot's control system to its actuators or motors, enabling the robot to perform various tasks such as moving, gripping objects, or activating other mechanical components.
  • For instance, when a robot needs to move its arm, the control system will use the 'OUTPUT' keyword to send the appropriate signal to the motor responsible for the arm's movement.
  • This signal tells the motor how much to rotate and in which direction, resulting in the desired motion.
  • Without the 'OUTPUT' keyword, the robot would not be able to perform any physical actions, as there would be no way to communicate the control signals to the actuators or motors.

Robot Classification and Specification Question 2:

In a 6-DOF (Degrees of Freedom) robotic arm, which combination of movements allows the arm to reach a diagonally placed object while maintaining a specific orientation of its end-effector? 

  1. Simultaneous Yaw and Pitch, followed by Z translation. 
  2. Pitch, Yaw, and Roll, followed by X, Y, and Z translations. 
  3. Simultaneous X, Y translations, and Roll.  
  4. X, Y, and Z translations, followed by Pitch, Yaw, and Roll.  

Answer (Detailed Solution Below)

Option 1 : Simultaneous Yaw and Pitch, followed by Z translation. 

Robot Classification and Specification Question 2 Detailed Solution

Explanation:

6-DOF Robotic Arm

  • A 6-DOF (Degrees of Freedom) robotic arm is a type of robotic manipulator that has six independent movements or axes.
  • These movements typically include three translational movements (along the X, Y, and Z axes) and three rotational movements (Yaw, Pitch, and Roll).
  • This configuration allows the robotic arm to position its end-effector in a three-dimensional space and orient it in any desired direction.
  • The 6-DOF robotic arm operates using a combination of its six joints to achieve precise positioning and orientation of its end-effector.
  • The translational movements allow the arm to reach different points in space, while the rotational movements enable the end-effector to assume various orientations.
  • This combination of movements is crucial for tasks that require both accurate positioning and specific orientation, such as assembly, welding, or picking and placing objects.

Advantages:

  • High flexibility and versatility in performing complex tasks.
  • Ability to reach and manipulate objects in a three-dimensional space with precise control.

Disadvantages:

  • Increased mechanical complexity due to the higher number of joints and actuators.
  • Greater computational and control requirements to manage the multiple degrees of freedom.

Applications: 6-DOF robotic arms are widely used in various industries, including manufacturing, healthcare, and research. They are essential for tasks that require high precision and flexibility, such as automated assembly lines, surgical procedures, and laboratory automation.

Robot Classification and Specification Question 3:

Which of the following is a characteristic feature of fixed robotic automation systems? 

  1. High initial cost but low operational cost for mass production. 
  2. High flexibility in adapting to changes in product design. 
  3. Frequent need for human intervention in operations.  
  4. Ability to reprogram for different tasks  

Answer (Detailed Solution Below)

Option 1 : High initial cost but low operational cost for mass production. 

Robot Classification and Specification Question 3 Detailed Solution

Explanation:

Fixed Robotic Automation Systems

  • Fixed robotic automation systems, also known as hard automation, are designed for specific tasks and are typically used in high-volume production environments.
  • These systems consist of specialized equipment that performs repetitive tasks with high precision and speed, making them suitable for mass production.
  • Fixed robotic automation systems are programmed to execute a specific sequence of operations repeatedly.
  • Once configured, these systems perform their tasks with minimal variation, ensuring consistent product quality and high throughput.
  • The fixed nature of these systems means that they are not easily reprogrammable for different tasks or product designs.

Characteristics:

  • High Initial Cost: The development and installation of fixed robotic automation systems require a significant initial investment. This cost includes the design, engineering, and integration of specialized equipment tailored to a particular production process.
  • Low Operational Cost for Mass Production: Despite the high initial cost, fixed robotic automation systems offer low operational costs for mass production. The economies of scale achieved through high-volume production help to offset the initial investment over time.
  • High Precision and Speed: These systems are optimized for specific tasks, allowing them to operate with high precision and speed. This results in consistent product quality and efficient production processes.
  • Limited Flexibility: Fixed robotic automation systems lack flexibility in adapting to changes in product design or production requirements. Any modifications to the system typically require significant re-engineering and investment.

Advantages:

  • High efficiency in high-volume production environments.
  • Consistent product quality due to precise and repeatable operations.
  • Reduced labor costs and human intervention.

Disadvantages:

  • High initial investment cost.
  • Limited flexibility to adapt to changes in product design or production processes.

Applications:

  • Fixed robotic automation systems are commonly used in industries where high-volume production and consistent product quality are critical, such as automotive manufacturing, electronics assembly, and consumer goods production.

Robot Classification and Specification Question 4:

Reach and stroke are specifications of a robotic manipulator, which of the following relation is true between them?

  1. Stroke = Reach
  2. Stroke ≤ Reach
  3. Stroke > Reach
  4. Stroke ≥ Reach

Answer (Detailed Solution Below)

Option 2 : Stroke ≤ Reach

Robot Classification and Specification Question 4 Detailed Solution

Concept:

  • Robot's reach is a measure of how far the robotic arm can reach when it's completely outstretched.
  • The horizontal stroke is defined as the total radial distance, the wrist can travel.
  • Reach is always greater than equal to stroke.

Robot Classification and Specification Question 5:

Consider the following statements regarding the laws of robotics:

1. A robot may not injure a human being or through inaction, allow a human to be harmed.

2. A robot must obey orders given by humans except when that conflicts with the first law.

3. A robot must protect its own existence.

Which of the following statements are correct?

  1. 1 and 2 only
  2. 2 and 3 only
  3. 1, 2 and 3
  4. 1 and 3 only

Answer (Detailed Solution Below)

Option 1 : 1 and 2 only

Robot Classification and Specification Question 5 Detailed Solution

Explanation:

The Three Laws of Robotics (often shortened to The Three Laws or known as Asimov's Laws) are a set of rules devised by science fiction author Isaac Asimov.

Asimov proposed three Laws of Robotics and later added the zeroth law

Law 0:

A robot may not injure humanity or through inaction, allow humanity to come to harm

Law 1:

A robot may not injure a human being or through inaction, allow a human being to come to harm unless this would violate higher-order law

Law 2:

A robot must obey orders given to it by human beings, except where such orders would conflict with a higher-order law

Law 3:

A robot must protect its own existence as long as such protection does not conflict with a higher-order law

From the explanation, only statements 1,2 are correct.

Top Robot Classification and Specification MCQ Objective Questions

The full form of VAL language used to control PUMA industrial robots is

  1. Variable Assembly Language
  2. Value Assembly Language
  3. Variable Advance Language
  4. Value Advance Language

Answer (Detailed Solution Below)

Option 1 : Variable Assembly Language

Robot Classification and Specification Question 6 Detailed Solution

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Explanation:

Initially, robots were programmed using textual languages such as Pascal and C. The code required to drive robots was very low-level, and very hard to create and maintain, requiring skills in both advanced programming and control theory. Textual robotic languages were developed specifically to address the problems associated with programming robots. These languages introduced “built-in” commands to operate the robot, eliminating (for instance) the need to develop code for motion primitives. 

VAL (Variable Assembly Language):

  • The system software that controls the PUMA robot arm is called VAL, which is supplied by Unimation to be used with its controller called as MARK.
  • The software is a sophisticated programming language and a complete robot control system but has disadvantages mostly due to the age of the product.
  • VAL is stored in the controller computer memory. The controller also houses operating controls for the robot system.
  • The VAL programming language consists of a full set of English language instructions for teaching and editing.
  • Work programs are entered into the computer/controller using either of two different procedures or a combination of both.
  • The programs can be entered with the teach pendant using the teach-by showing method or using the CRT and keyboard inputs.

The number of degrees of freedom in a 3D Robot of TRL : R type configuration is

  1. 4
  2. 3
  3. 2
  4. 1

Answer (Detailed Solution Below)

Option 1 : 4

Robot Classification and Specification Question 7 Detailed Solution

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Type of Robot

Degree of freedom(DOF)

Planar

3

TRL: R Type

4

SCARA

4

PUMA Industrial

6

T3

6

Revolving joint of the robot is referred to as

  1. L joint 
  2. O joint 
  3. T joint 
  4. V joint

Answer (Detailed Solution Below)

Option 4 : V joint

Robot Classification and Specification Question 8 Detailed Solution

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Concept:

Manipulator joints in robots are given below,

Translational motion:

Linear joint (L)

Orthogonal joint (O)

Rotary motion:

Rotational joint (R)

Twisting joint (T)

Rotary joint (V)

All the diagrams are given in the order of the names mentioned above.

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Consider the following statements regarding the laws of robotics:

1. A robot may not injure a human being or through inaction, allow a human to be harmed.

2. A robot must obey orders given by humans except when that conflicts with the first law.

3. A robot must protect its own existence.

Which of the following statements are correct?

  1. 1 and 2 only
  2. 2 and 3 only
  3. 1, 2 and 3
  4. 1 and 3 only

Answer (Detailed Solution Below)

Option 1 : 1 and 2 only

Robot Classification and Specification Question 9 Detailed Solution

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Explanation:

The Three Laws of Robotics (often shortened to The Three Laws or known as Asimov's Laws) are a set of rules devised by science fiction author Isaac Asimov.

Asimov proposed three Laws of Robotics and later added the zeroth law

Law 0:

A robot may not injure humanity or through inaction, allow humanity to come to harm

Law 1:

A robot may not injure a human being or through inaction, allow a human being to come to harm unless this would violate higher-order law

Law 2:

A robot must obey orders given to it by human beings, except where such orders would conflict with a higher-order law

Law 3:

A robot must protect its own existence as long as such protection does not conflict with a higher-order law

From the explanation, only statements 1,2 are correct.

Which one of the following symbols is used as the notation for designating arm and body of a robot with jointed arm configuration? 

  1. TRL 
  2. TLL, LTL, LVL 
  3. LLL 
  4. TRR, VVR

Answer (Detailed Solution Below)

Option 4 : TRR, VVR

Robot Classification and Specification Question 10 Detailed Solution

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Concept:

Robot with jointed arm configuration for 3 DOF-robot carries all its joints as revolute.

It can be TRR, VRR and other combinations of T, R and V.

For e.g., TRR configuration consists of a vertical column, that swivels about the base using a T joint. At the top of the column is a shoulder joint (R joint), output to an elbow joint (R-joint).

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Robot configuration

(Arm & Body)

Symbol

Jointed arm configuration →

TRR, VVR

Polar configuration →

TRL

Cylindrical configuration →

TLL, LTL, LVL

Cartesian configuration →

LLL

Reach and stroke are specifications of a robotic manipulator, which of the following relation is true between them?

  1. Stroke = Reach
  2. Stroke ≤ Reach
  3. Stroke > Reach
  4. Stroke ≥ Reach

Answer (Detailed Solution Below)

Option 2 : Stroke ≤ Reach

Robot Classification and Specification Question 11 Detailed Solution

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Concept:

  • Robot's reach is a measure of how far the robotic arm can reach when it's completely outstretched.
  • The horizontal stroke is defined as the total radial distance, the wrist can travel.
  • Reach is always greater than equal to stroke.

Which of the following provides anti-clockwise and clockwise rotation about the vertical axis perpendicular to the arm?

  1. Shoulder swivel
  2. Arm sweep
  3. Wrist bend
  4. Elbow extension

Answer (Detailed Solution Below)

Option 2 : Arm sweep

Robot Classification and Specification Question 12 Detailed Solution

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Explanation:

Industrial robots are defined by the characteristics of their control systems, manipulator or arm geometry, modes of operation etc.

The term degree of freedom as applied to a robot indicates the number of its axes, an important indicator of a robot's capability. Limited sequence robots have two or three axes only while unlimited sequence robots typically have five or six-axes to perform more complex tasks.

The basic manipulator arm might have only three axes:

Arm sweep: It provides anti-clockwise and clockwise rotation about the vertical axis.

Shoulder swivel: It provides the arm to pitch up and down about a horizontal shoulder axis.

Elbow extension: It provides the arm to pitch up and down about a horizontal elbow axis.

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Consider the following statements regarding the laws of Robotics:

1. A Robot shall not injure a human being or, through inaction, allow a human being harmed.

2. A Robot must obey orders given by humans except when such orders conflict with first law.

3. A Robot must always protect its own existence.

Which of the above statements are correct? 

  1. 1 and 2 only
  2. 1 and 3 only
  3. 2 and 3 only
  4. 1, 2 and 3

Answer (Detailed Solution Below)

Option 1 : 1 and 2 only

Robot Classification and Specification Question 13 Detailed Solution

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Concept:

The three Law of Robotics:

1. A robot may not injured a human being or through inaction, allow a human being to come to harm

2. A robot must obey the orders give it by human beings except where such orders would conflict with the first law.

3. A robot must protect its own existing as long as such protection does not conflict with the first or second laws.

The following measures are carried out by internal state sensors of the end effector.

  1. Position
  2. Position and Velocity
  3. Velocity and Acceleration
  4. Position, Velocity and Acceleration

Answer (Detailed Solution Below)

Option 4 : Position, Velocity and Acceleration

Robot Classification and Specification Question 14 Detailed Solution

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Explanation:

End effector:

The end effector is the hand connected to the robot's arm. The end effector in the form of the gripper, vacuum pump, tweezer, scalpel etc. is just about anything that helps it to do the job.

Sensor:

Sensors play an important role in the functioning of robots. Sensors are basically measurement devices that translate one form of signal into another. They are used in the robots for feedback purposes. The feedback system helps in guiding the robot end-effector along the proper path for proper operations.

Sensors are classifieds as:

  • Internal state sensors
  • External state sensors

 

Internal state sensors:

  • They are basically used for the detection of variables that help in identifying the orientation of the tool-tip and manipulator joints.
  • Example: position, velocity, and acceleration from potentiometers, LVDT, etc.

External state sensors:

  • External state sensors are used for the detection of variables such as the range of the target or the concerned object of interest to be picked or moved
  • Example: Strain gauges, proximity sensors, etc.

Using a robot with 1 degree of freedom and having 1 sliding joint with a full range of 1 m, if the robot’s control memory has a 12-bit storage capacity, the control resolution for the axis of motion will be

  1. 0.236 mm
  2. 0.244 mm
  3. 0.252 mm
  4. 0.260 mm

Answer (Detailed Solution Below)

Option 2 : 0.244 mm

Robot Classification and Specification Question 15 Detailed Solution

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Concept:

\({\rm{Control\;resolution}} = \frac{{stroke\;length}}{{{2^n}}}\)

Given:

Stroke length = 1000 mm, 12-bit storage capacity (n)

Calculation:

\(\therefore {\rm{Control\;resolution\;}} = {\rm{\;}}\frac{{1000}}{{{2^{12}}}}\)

∴ Control resolution= 0.244 mm.
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