Robotics Week 1 NPTEL Assignment Answers 2025

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✅ Subject: Robotics
📅 Week: 1
🎯 Session: NPTEL 2025 July-October
🔗 Course Link: Click Here
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NPTEL Robotics Week 1 Assignment Answers 2025

1. The term: Robotics was first coined by

a. Victor Scheinman
b. Joseph Engelberger
c. Karel Capek
d. Isaac Asimov

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2. Hard automation is used in industry for

a. Piece production
b. Mass production
c. Batch production
d. Job production

Answer :

3. Who is known as the father of robot?

a. Karel Capek
b. George Devol
c. Isaac Asimov
d. Joseph Engelberger

Answer :

4. The Tomorrow Tool (T3) was developed by

a. Joseph Engelberger
b. Raibart
c. Richard Hohn
d. Victor Scheinman

Answer :

5. Programmable Universal Machine for Assembly (PUMA) was developed by

• a. Odetics
• b. Stanford Research Institute (SRI)
• c. Cincinnati Milacron Corporation
• d. Unimation

Answer :

6. The robot: Curiosity was developed by

a. NASA, USA
b. Honda
c. Odetics
d. Stanford Research Institute (SRI)

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7. Hooke Joint or Universal Joint consists of

a. two linear joints
b. two rotary joints
c. one linear and another rotary joint
d. three rotary joints.

Answer :

8. A cylindrical joint has

a. 1dof
b. 2dof
c. 3dof
d. 4dof

Answer :

9. A 4-bar planar mechanism has

a. 1 dof
b. 2 dof
c. 3 dof
d. 4 dof

Answer :

10. Workspace of a Cartesian coordinate robot is

a. a cuboid.
b. a cylindrical annular space.
c. the volume swept between two partial spheres.
d. a sphere

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NPTEL Robotics Week 1 Assignment Answers 2024

1. Who did introduce the Czech word “Robota”, which means Robot?

a) Isaac Asimov
b) Karel Capek
c) Joseph Engelberger
d) George Devol
Answer: b
Explanation: The term “Robota” was first used by Karel Čapek in his 1920 play R.U.R. (Rossum’s Universal Robots), meaning forced labor.

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2. Who did introduce the term “Robotics”?

a) Isaac Asimov
b) Karel Capek
c) George Devol
d) Joseph Engelberger
Answer: a
Explanation: Isaac Asimov coined the term “Robotics” in his 1941 science fiction story, laying the foundation for robotic laws.

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3. Cylindrical Joint (C)

a) is a pure Linear Joint with one degree of freedom (dof).
b) is a pure Rotary Joint with one degree of freedom (dof).
c) provides a combination of Linear and Rotary motions with two dofs.
d) provides three dofs.
Answer: c
Explanation: A cylindrical joint combines one translational and one rotational movement, giving it 2 degrees of freedom.

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4. Ball and Socket Joint or Spherical Joint has

a) 1 degree of freedom (dof)
b) 2 dofs
c) 3 dofs
d) 4 dofs
Answer: c
Explanation: A ball and socket joint allows movement in three axes—pitch, yaw, and roll—hence 3 degrees of freedom.

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5. Which one of the following statements is CORRECT?

a) Both Revolute Joint and Twisting Joint are linear in nature, and these are the same.
b) Both Revolute Joint and Twisting Joint are linear in nature, and these are different by their definitions.
c) Both Revolute Joint and Twisting Joint are rotary in nature, and these are the same.
d) Both Revolute Joint and Twisting Joint are rotary in nature, and these are different by their definitions.
Answer: d
Explanation: Both joints involve rotary motion but differ in their axis orientation and functional application.

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6. By definition, an ideal Planar Manipulator has got

a) 1 dof
b) 2 dof
c) 3 dof
d) 4 dof
Answer: c
Explanation: A planar manipulator can move in the X-Y plane and rotate about the Z-axis—totaling 3 DOFs.

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7. Which one of the following statements is TRUE?

a) Degree of freedom (dof)/Mobility of a Serial Manipulator becomes equal to the summation of connectivity values of its joints.
b) Degree of freedom (dof)/Mobility of a Parallel Manipulator becomes equal to the summation of connectivity values of its joints.
c) Load carrying capacity of a Serial Manipulator is more than that of a Parallel Manipulator.
d) Both the Serial Manipulator and Parallel Manipulator consisting of the same number of similar joints have exactly the same load carrying capacity.
Answer: a
Explanation: In serial manipulators, the total mobility is calculated by summing the DOFs of individual joints.

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8. Shakey, an intelligent mobile robot with vision capability and sensors, was built by?

a) Stanford Research Institute (SRI)
b) Honda
c) Cincinnati Milacron Corporation
d) Unimation Corporation
Answer: a
Explanation: Shakey was developed in the 1960s by SRI as one of the first mobile robots with artificial intelligence features.

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9. The Workspace of a Spherical Coordinate Robot

a) is a Cuboid.
b) is a Cylindrical Annular Space.
c) is the volume swept between two partial Spheres.
d) None of the above
Answer: c
Explanation: Due to the combination of rotary and linear motion, the workspace resembles a spherical segment.

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10. Which one of the following statements is TRUE?

a) Both Servo-controlled and Non-servo-controlled Robots use an Open-loop Control System.
b) Both Servo-controlled and Non-servo-controlled Robots use a Closed-loop Control System.
c) Servo-controlled Robot and Non-servo-controlled Robot have Closed-loop and Open-loop Control Systems, respectively.
d) Servo-controlled Robot and Non-servo-controlled Robot have Open-loop and Closed-loop Control Systems, respectively.
Answer: c
Explanation: Servo-controlled systems adjust movement using feedback (closed-loop), while non-servo systems do not (open-loop).