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Multiple Choice Questions

Robots differ from other machines in that ........

English Language and Interpesonal Skills (PCS) Reading Comprehension (C)

Read the passage below and answer the following questions.

The contemporary industrial robot, in the eyes of politicians and others, may wear the halo of high technology, but it came into being to meet a rather mundane need. In the booming labour market the early 1960s, it became increasingly difficult to find people willing to do boring, repetitive and unpleasant jobs. What was needed was not a machine which could master elaborate human skills, but one which could provide the mindless lumpen proletariat demanded by mass production. What had to be learnt, and proved well within the robot’s capacity, were sequences of precise movement of the arm and hand. Such sequences were relatively easily programmed into a computer memory, especially after the advent of the microprocessor freed robots from their dependence on the mainframe computers of the 1960s. But however impressive, even uncanny, a robot may appear to the layman as it repeats a series of movements with flawless precision, it is, in fact, operating blindly and by rote. Repetitive manipulation is, of course, a skill common to many machines: what differentiates the robot is that it makes use of an articulated arm analogous to the human limb and that it can be reprogrammed to perform a whole variety of tasks without the need to redesign, or adjust its mechanical components. There are however, a limited range of applications, in which manipulator arm, operating blindly and without intelligence, is useful. Looking through manufacturers’ catalogues one is struck not by the machine’s versatility but by the monotonous repetition of a sort of litany of robot functions: machine tool loading and unloading, spot welding, paint spraying and parts transfer being the commonest.
Whatever its task, a robot is dependent for its effectiveness upon a whole supporting cast of automated machines. Everything must be presented to it in consistent positions and orientations; it can only operate in a world of guaranteed predictability. Indeed, to consider robots in isolation from automation, in general, is rather like studying an ant which has been removed from an anthill – an ingenious but purposeless curiosity. The need to provide an automated environment has so far restricted robot use to large scale industry businesses such as specialist machine shops, producing small batches of many different items have little incentive to set up the paraphernalia of conveyors, jigs and electronic communication, which a robot requires.

Robots differ from other machines in that:

They react like human beings

They need little maintenance

They have a limited number of applications

They are easy to switch from task to task

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Explanation:

- Option 1: They react like human beings

Robots are not designed to react like humans. They perform repetitive tasks and operate without intelligence or sight.

- Option 2: They need little maintenance

The passage doesn't discuss maintenance requirements. It focuses on task performance and reprogrammability.

- Option 3: They have a limited number of applications

This is true. The passage mentions the limited applications such as loading, welding, and spraying, within predictable environments.

- Option 4: They are easy to switch from task to task

This is also correct. Robots can be reprogrammed for different tasks without mechanical adjustments.

- Answer: Option 4: They are easy to switch from task to task is correct because the passage highlights robots can be reprogrammed for various tasks easily.

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