इन्जिनियरिङ सेवा सब-इन्जिनियर (पाँचौँ तह) – प्राविधिक पत्र
इन्जिनियरिङ सेवा – सब-इन्जिनियर (पाँचौँ तह)
Sub-Engineer – 5th Level · Engineering Service
१,९४० प्रश्न उपलब्ध। मोड छान्नुहोस्:
प्राविधिक पत्र: प्रश्न र उत्तर
सही लागेको विकल्पमा थिच्नुहोस्। सही भए हरियो, गलत भए रातो देखिन्छ; ५ सेकेन्डपछि सही उत्तर र व्याख्या देखिन्छ।
सही: ० / ०
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On a map of scale 1:5000, an area measures 4 cm². The corresponding ground area is:
सही उत्तर: क) 1 hectare
1 cm = 50 m, so 1 cm² = 2500 m²; 4 cm² = 10,000 m² = 1 hectare.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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On a map of RF 1:2500, 1 cm on the map represents a ground distance of:
सही उत्तर: ग) 25 m
1 cm × 2500 = 2500 cm = 25 m.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A scale of chords is used mainly for:
सही उत्तर: ख) Measuring or setting out angles on a drawing
A scale of chords is marked with chord lengths corresponding to angles, so angles can be plotted without a protractor.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A vernier has 10 divisions equal to 9 main scale divisions, each main division being 1 mm. The least count is:
सही उत्तर: घ) 0.1 mm
Least count = one main division ÷ number of vernier divisions = 1/10 = 0.1 mm.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In a retrograde vernier, n divisions of the vernier are equal to:
सही उत्तर: क) (n + 1) divisions of the main scale
A retrograde vernier is graduated in the opposite direction to the main scale and n vernier divisions equal (n + 1) main scale divisions.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A diagonal scale is used on drawings because it allows reading of:
सही उत्तर: ग) Three successive units, e.g. metres, decimetres and centimetres
By using diagonals, a diagonal scale subdivides the smallest main division further, giving three units.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In surveying, 'precision' refers to:
सही उत्तर: क) The closeness of repeated measurements to one another
Precision is the degree of agreement among repeated measurements; accuracy is closeness to the true value.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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An angle is observed as 30°20'10" with weight 2 and as 30°20'16" with weight 1. The weighted mean value is:
सही उत्तर: ख) 30°20'12"
Weighted mean of seconds = (2×10 + 1×16)/3 = 36/3 = 12", giving 30°20'12".
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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An angle is measured 9 times, and the standard deviation of a single observation is 6 seconds. The standard error of the mean is:
सही उत्तर: ग) 2 seconds
Standard error of mean = σ/√n = 6/√9 = 2 seconds.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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For a set of observations of equal weight of the same quantity, the most probable value is the:
सही उत्तर: घ) Arithmetic mean
When all observations are equally reliable, their arithmetic mean is the most probable value.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
यी अभ्यास प्रश्न हुन्, आधिकारिक प्रश्न होइनन्। पाठ्यक्रम, विज्ञापन र नतिजाका लागि सम्बन्धित निकायको आधिकारिक वेबसाइट हेर्नुहोस्। उत्तरमा गल्ती भेटे प्रश्नमुनिको "टिप्पणी / गल्ती रिपोर्ट" मा लेख्नुहोस्।
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