Rajasthan PSC — Assistant Agriculture Engineer (Agriculture Engineering syllabus) · India · Rajasthan Public Service Commission
Original practice questions written to the published syllabus · not past papersDesigning machines around the people who use them, and measuring the noise, vibration and work load they face.
In the exams: GATE AG Section 3 (ergonomics asked in all 8 papers 2019–26); ICAR AIEEA-PG Unit V; ICAR AICE subject 39 Unit 5; NCEES PE health and safety
How our questions for Rajasthan PSC spread across the units of Human Engineering, Ergonomics & Safety. Difficulty: 20 easy, 7 medium, 0 hard.
| Farm accidents and their causes | 6 | |
| Tools designed for women workers | 5 | |
| Safety standards and ROPS | 4 | |
| Anthropometry | 3 | |
| Design of controls and seats | 3 | |
| Work physiology: energy expenditure, heart rate and oxygen uptake | 2 | |
| Noise: decibels and exposure | 2 | |
| Dust and thermal stress | 2 |
Choose an answer, then open the working. Each explanation says why the right answer is right and why the others are not.
The minimum clearance between a tractor steering wheel and the seat (thigh clearance) should be designed for
A. a large user, typically the 95th percentile of the larger user group
A clearance must accommodate the biggest users, so it is set for a high percentile of the larger group. Designing for the average leaves half the users cramped; the 5th percentile principle applies to reaches, not clearances.
The distance from the seat to a frequently used hydraulic control lever should be designed so that it can be reached by
B. a small operator, typically the 5th percentile of the smaller group
If the small user can reach the lever, everyone larger can too. Using the 95th or 50th percentile would leave small users, often women, unable to reach without leaving the seat.
Measurement of the maximum forward reach of a seated operator while operating a lever is an example of
A. dynamic (functional) anthropometry
Functional dimensions are measured while the body performs a movement. Static anthropometry measures the body in a fixed standard posture, for example sitting height.
The anthropometric dimension that primarily determines seat height is
B. popliteal height
Seat height is set from the floor-to-underside-of-thigh (popliteal) height so the feet rest flat without pressure under the thighs. Sitting height sets backrest and head clearance; hip breadth sets seat width.
Heinrich's accident pyramid proposed that for every major injury there are about
B. 29 minor injuries and 300 no-injury incidents
The classic ratio is 1:29:300. The numbers are disputed, but the principle that near misses greatly outnumber injuries and share causes remains useful.
A roll-over protective structure on a tractor protects the operator effectively only if
A. the seat belt is worn
The belt keeps the operator inside the clearance zone; an unbelted operator can be thrown out and crushed by the tractor or the ROPS itself.
A manually pulled drum seeder is used to sow
D. pre-germinated paddy seed in puddled fields
The perforated drums drop sprouted paddy in rows on puddled soil, replacing transplanting in a stooped posture.
Ten here, 27 in the app. The Laisha app has every practice question we have written to Rajasthan PSC in this subject, marked as you go, with timed papers, a jump-to-unanswered list and a certificate when you pass at 70 per cent.
Free for ten days, then one subscription of US$10 a month. We would rather say so here than have you find it later.
An AI operating system for agriculture: free guides, manuals and tools written for every country.