इन्जिनियरिङ सेवा सब-इन्जिनियर (पाँचौँ तह) – प्राविधिक पत्र

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

721. Blockboard consists of:

     कWood fibres pressed into a hard sheet खA core of wooden strips (blocks) glued side by side, faced with veneers on both sides गLayers of paper impregnated with resin घCement and wood wool
     💬 टिप्पणी / गल्ती रिपोर्ट (०)

     छलफल / प्रश्न उत्तरमा गल्ती छ

     पठाउनुहोस्

     टिप्पणी जाँचपछि मात्र देखिन्छ।

722. Particle board (chipboard) is manufactured from:

     कThin veneers glued with grains at right angles खSolid planks joined by nails गWood chips or particles bonded with a synthetic resin under heat and pressure घBamboo strips woven together
     💬 टिप्पणी / गल्ती रिपोर्ट (०)

     छलफल / प्रश्न उत्तरमा गल्ती छ

     पठाउनुहोस्

     टिप्पणी जाँचपछि मात्र देखिन्छ।

723. Quarter sawing (radial sawing) of logs is preferred for high-quality boards because the boards:

     कAre wider than by any other method खWaste no timber at all गShrink and warp less and show the figure of medullary rays घContain more sapwood
     💬 टिप्पणी / गल्ती रिपोर्ट (०)

     छलफल / प्रश्न उत्तरमा गल्ती छ

     पठाउनुहोस्

     टिप्पणी जाँचपछि मात्र देखिन्छ।

724. Bethell's process of preserving timber is a:

     कFull-cell pressure process in which preservative is forced into the timber after a vacuum खBrush application of paint गEmpty-cell process that leaves only a coating on cell walls घMethod of seasoning by smoke
     💬 टिप्पणी / गल्ती रिपोर्ट (०)

     छलफल / प्रश्न उत्तरमा गल्ती छ

     पठाउनुहोस्

     टिप्पणी जाँचपछि मात्र देखिन्छ।

725. Wet rot in timber typically occurs when the timber is:

     कKept permanently dry in a ventilated room खSubjected to alternate wetting and drying गFully submerged in water at all times घPainted with oil paint
     💬 टिप्पणी / गल्ती रिपोर्ट (०)

     छलफल / प्रश्न उत्तरमा गल्ती छ

     पठाउनुहोस्

     टिप्पणी जाँचपछि मात्र देखिन्छ।

726. A ring (cup) shake in timber is a crack that:

     कRadiates from the pith towards the bark खRuns along the length on the outer surface only गSeparates the wood partly or wholly along the annual rings घIs caused by insects
     💬 टिप्पणी / गल्ती रिपोर्ट (०)

     छलफल / प्रश्न उत्तरमा गल्ती छ

     पठाउनुहोस्

     टिप्पणी जाँचपछि मात्र देखिन्छ।

727. The main function of mortar in masonry is to:

     कBind the units together and distribute loads evenly खMake the wall waterproof completely गAct as reinforcement घProvide decoration only
     💬 टिप्पणी / गल्ती रिपोर्ट (०)

     छलफल / प्रश्न उत्तरमा गल्ती छ

     पठाउनुहोस्

     टिप्पणी जाँचपछि मात्र देखिन्छ।

728. Gauged mortar is:

     कLime mortar to which cement is added to improve its strength खCement mortar with extra water गMud mortar with straw घMortar made with crushed brick only
     💬 टिप्पणी / गल्ती रिपोर्ट (०)

     छलफल / प्रश्न उत्तरमा गल्ती छ

     पठाउनुहोस्

     टिप्पणी जाँचपछि मात्र देखिन्छ।

729. Kankar, found in nodules in some soils, is used for producing:

     कHydraulic lime खFat lime गPlaster of Paris घGlass
     💬 टिप्पणी / गल्ती रिपोर्ट (०)

     छलफल / प्रश्न उत्तरमा गल्ती छ

     पठाउनुहोस्

     टिप्पणी जाँचपछि मात्र देखिन्छ।

730. Poor (lean) lime contains a high proportion of clay impurities (more than about 30%) and therefore:

     कIs the best lime for whitewash खSlakes and sets very slowly and is used only for inferior work गSets under water like cement घSlakes violently with great heat
     💬 टिप्पणी / गल्ती रिपोर्ट (०)

     छलफल / प्रश्न उत्तरमा गल्ती छ

     पठाउनुहोस्

     टिप्पणी जाँचपछि मात्र देखिन्छ।