ASRB NET — Farm Machinery & Power / Land & Water Management Engineering / Agricultural Structures & Process Engineering · India · Agricultural Scientists Recruitment Board (ICAR)
Original practice questions written to the published syllabus · not past papersASRB NET — Farm Machinery & Power / Land & Water Management Engineering / Agricultural Structures & Process Engineering is a specialist certification exam run by Agricultural Scientists Recruitment Board (ICAR), for candidates in India. NET: 150 MCQs, 150 marks, 2 hours, −1/3 per wrong answer, English/Hindi, PG level. Combined NET/ARS/SMS/STO recruitment runs prelims, mains and interview.
Official site: pw.live.
We have not been able to confirm these details against the exam body's own specification, so fees, dates and pass marks are left out on purpose. Check the current format, eligibility, fees and dates on the official site.
Conceptual and research-oriented questions on ergonomic evaluation protocols, Indian research on women workers and drudgery, OECD and BIS test codes, and accident surveys in Indian agriculture.
Designing machines around the people who use them, and measuring the noise, vibration and work load they face.
Our 25 ASRB NET questions in this subject: 0 easy, 17 medium, 8 hard, across 9 units.
Choose an answer, then open the working. Each explanation says why the right answer is right and why the others are not.
These 10 were written to ASRB NET and are not shown on any other exam's page.
A worker's VO2max is 2.1 L/min and the oxygen uptake while pedalling a paddy thresher is 0.9 L/min. If the acceptable limit for an 8-hour day is taken as 35% of VO2max, the task
C. uses 42.9% of VO2max and is above the acceptable limit
Relative load = 0.9/2.1 = 42.9%, which exceeds 35%, so continuous operation over a full day is not acceptable without rest or task sharing. Inverting the ratio or using the unused reserve (57.1%) are common slips.
OWAS, RULA and REBA are
B. observational methods for scoring working postures
They code body-segment positions (with load and repetition) into action levels. They do not measure physiology, vibration or noise.
Early noise-induced hearing loss in tractor drivers typically appears in an audiogram as
C. a notch around 4 kHz
Hair cells tuned near 4 kHz are damaged first. Temporary threshold shift recovers; permanent loss does not.
Frequency-weighted rms seat accelerations are ax = 0.30, ay = 0.25 and az = 0.50 m/s². Applying ISO 2631-1 health multipliers (1.4 for x and y, 1.0 for z), the vibration total value (vector sum) is about
D. 0.74 m/s²
Weighted: 1.4 × 0.30 = 0.42, 1.4 × 0.25 = 0.35, 0.50. av = √(0.42² + 0.35² + 0.50²) = 0.741 m/s². Omitting the multipliers gives 0.63; adding arithmetically gives 1.27; 0.50 is only the dominant axis, which ISO 2631-1 uses for the health assessment when one axis dominates — but the question asks for the vector sum.
When air and surrounding surfaces are hotter than the skin, the only effective route of heat loss from the body is
C. evaporation of sweat
Convection and radiation become heat gains when the environment is hotter than skin, so evaporation carries the whole load; high humidity then makes heat stress severe.
In surveys of accidents with power threshers in India, the typical injury mechanism is
C. the hand or arm being drawn into the feed opening and threshing drum while feeding crop
Feeding crop by hand into a short or unguarded chute, often at night and under fatigue, draws the hand into the drum. Longer feeding chutes and safe feeding platforms were introduced to address this.
A fault tree analysis differs from an event tree analysis in that it
B. works backward from a defined undesired top event to its combinations of causes
Fault trees start at the top event and use AND/OR gates to find causes. Event trees start from an initiating event and branch forward to outcomes.
The Haddon matrix used in injury prevention crosses
B. pre-event, event and post-event phases with human, equipment and environment factors
Haddon's matrix identifies interventions in each phase and factor, for example training (pre-event, human), ROPS (event, equipment) and emergency access (post-event, environment). Probability-severity is a risk matrix.
Under the machinery risk-reduction principle of ISO 12100, the correct order of measures is
C. inherently safe design, then safeguarding, then information for use
The three-step method starts with eliminating or reducing hazards by design, then guards and protective devices, then warnings and instructions for the residual risk.
India's Dangerous Machines (Regulation) Act, 1983 was enacted mainly to
B. regulate trade in and use of dangerous machines such as power threshers, and compensate victims
The Act was a response to thresher accidents; it covers safety requirements for such machines and compensation. Noise, pesticides and groundwater are governed by other laws.
This plan follows where our questions actually fall, so the time goes where the marks are likely to be. It is our reading of the syllabus, not the exam body's weighting.
Read the manual chapters for these first and do every worked question you can find on them.
Aim for one sitting per unit, then mixed questions across them.
Learn the definitions, classifications and standard numbers; these units are more often recalled than worked.
Come back to these after a first pass, untimed, and read every explanation, including for the options you rejected.
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