Syllabus for GDCE for the post of JE Mechanical & Allied Engineering Exam Group

10-06-2022

Syllabus for Mechanical & Allied Engineering Exam Group – JE Pattern and Syllabus of CBT 1.  No of Questions: 100 & Duration of Exam  -  90 minutes (120 Minutes for eligible PwBD candidates accompanied with Scribe) 2  The question paper will be will be of objective type with multiple choices in English / Hindi /Nominated Regional Language 3. There shall be negative marking in the CBT and 1/3 of the allotted marks for each question shall be deducted for every wrong answer. 4. The Questions will be likely to include questions pertaining to General Awareness, Physics and Chemistry, Basics of Computers and Applications, Basics of Environment and Pollution Control and

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What indications do signals show and what do they mean?
June 21, 2019

The most common indications shown by various signals are the following: Stop This requires a train to stop dead and not pass the signal except under special instructions or emergency procedures. (Stop signals may be passed after halting and waiting in automatic block territory – usually 1 min. during the day & 2 min. during the night.) This

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What are the systems of colour-light signalling used by IR?
June 21, 2019

There are three systems of colour-light signalling in use. (In IR terminology, the term Multiple-Aspect Colour-Light signalling includes both 3- and 4-aspect signalling, and 2-aspect signalling is usually treated as a variant of 2-aspect semaphore signalling. Hence the classification below is not the same as IR's.) Two-aspect colour-light

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What are drooping signals?
June 21, 2019

In single-wire transmission, heat causes the transmission wire to stretch or shrink, and this can result in an incorrect indication of the signal aspect. For instance, the most restrictive aspect may end up being below the horizontal in upper-quadrant signalling on a hot day - this is termed a drooping signal when the angle is more than 5 degrees.

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What are the systems of semaphore signalling used by IR?
June 21, 2019

In IR's lower quadrant system (Two-aspect Lower Quadrant) the semaphore arm can only be in two positions. The horizontal on position shows the most restrictive indication (requiring the train to stop or slow down or proceed with caution depending on the kind of signal), and a lowered position where the semaphore arm is at about 60 degrees or more

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What kinds of signals (semaphores, lamps, etc.) does IR use?
June 21, 2019

IR uses several kinds of signals. Semaphore signals have generally given way to colour-light signals although there are still many places with semaphore signalling in use. Semaphore signals are the older style signals seen widely throughout the country, where each signal has an assembly with an arm mounted on a mast, where the arm can move

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Why are multiple aspect signalling systems used? What was wrong with the older systems which had two aspects?
June 21, 2019

Multiple aspect signals, by providing several intermediate speed stages between 'clear' and 'on', allow high-speed trains sufficient time to brake safely if required. This becomes very important as train speeds rise. Without multiple-aspect signals, the stop signals have to be placed very far apart to allow sufficient braking distance, and this

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