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MCQ
841. Thickness of base, in no case, should be more than -
10 cm
15 cm
20 cm
30 cm
842. A pre-cast pile generally used is:
Circular
Octagonal
Square
Rectangular
843. The spacing of transverse reinforcement of column is decided by the following considerations: .
Forty-eight times the diameter of transverse reinforcement. all the above
The teast lateral dimension of the column.
Sixteen times the diameter of the smallest longitudinal reniforcing rod is the column.
all the above
844. Why are steel reinforcing rods used in concrete beams:
To make it carry compression.
To make it carry tension.
To make it carry both compression and tension.
None of these.
ব্যাখ্যা: Steel reinforcing rods used in concrete beam because they have good tensile strength, concrete carry only compression strength.
845. The member of independent equations to be satisfied for static equilibrium of a plane structure is:
1
2
3
6
846. Loss Angeles testing machine is used to conduct:
Abrasion test
Impact test
Attrition test
Crushing strength test
ব্যাখ্যাঃ Resistance to abrasion of aggregate is deferemined in laboratory by loss angeles test machine.
847. কংক্রিটের Strength জানার জন্য সাধারণত Concrete এর Cylinder-এর কতদিনের test করা হয়?
১৫ দিন
২০ দিন
২৮ দিন
৩৫ দিন
848. In order to improve farming methods, we need-
machine
a machinery
machinery
machineries
ব্যাখ্যা: খামার পদ্ধতি উন্নয়ন বা উন্নতি করার লক্ষ্যে আমাদের যন্ত্রপাতির (machinery) প্রয়োজন। কারণ উন্নত যন্ত্রপাতি ছাড়া খামার পদ্ধতি উন্নয়ন করা সম্ভব নয়।
849. Machine foundation is subjected to:
Static loads
Wind loads
Dynamic loads
Static and dynamic loads
ব্যাখ্যা : Machine foundation are subjected to the dynamic lond caused by the machine. Theses dynamic loud are then transferred to the foundation supporting the machine
850. What type of noun the underlined word is? 'Water has no colour of its own'.
common
proper
abstract
material
ব্যাখ্যাঃ যে-সকল Noun-এর সংখ্যা গণনা করা যায় না শুধুমাত্র পরিমাপ করা যায় তাদেরকে material noun বলে। যেমন- Water, milk, oil etc.
851. Identify the correct sentences:
It is raining for two days
it rained for two days
It has been raining for two days
It was raining for two days
ব্যাখ্যা: কোনো sentence-এর মধ্যে for থাকলে এবং অনির্দিষ্ট সময় উল্লেখ থাকলে sentence-টি present perfect continuous tense হয়।
852. Piezometer দিয়ে তরল পদার্থের যে Pressure মাপা হয় তা হলো-
Atmospheric pressure
Gauge pressure
Absolute pressure
Vacuum pressure
853. The type of bond in a brick masonry containing altenate courses of stretcher and headres is called:
Flemish bond
Stretcher bond
English bond
Header bond
ব্যাখ্যাঃ যে বন্ডের একস্তর স্ট্রেচার এবং অপর স্তর হেডার গাঁথুনি দ্বারা গঠিত হবে, তাকে ইংলিশ বন্ড বলে।
854. The book in which chain measurements are entered is called:
Field book
Study book
Record book
Chain book
ব্যাখ্যা : The field measurements sketches and relevant notes are recorded for future refernce in a note book known as field book. There are two types of field book such as single line and double line field book.
855. Standard BOD is measured at:
20°C-1 day
25°C-3 day
20°C -5 day
30°C-5 day
ব্যাখ্যা: BOD-এর সাহায্যে পানিতে অক্সিজেনের মাত্রা কতটুকু আছে তা পরিমাপ করা হয়। BOD-এর পূর্ণরূপ Biochemical Oxyzen Demand। পানির বিশুদ্ধতা পরিমাপ করার জন্য ৫ দিন 20℃ তাপমাত্রা প্রয়োগ করা হয়।
856. Workability of concrete is measured by:
Vicat apparatus test
Slump test
Setting time
test Fineness test
ব্যাখ্যাঃ Concrete slump test or slump cone test is to determine the workability or consistency of concrete mix prepared at the laboratory or the construction site during the progress of work
857. When a cohesionless soil attains quick condition, it looses:
Shear strength
Bearing capacity
Both (ক) and (খ)
Neither (ক) and (খ)
ব্যাখ্যাঃ Cohesionless soilds are defined as any free running type of soil such as sand, Gravel and stone. Cohesionless soil attains quick condition then it lose it's shear strengh and bearing capacity.
858. The most suitable equipment for compacting clay soil is a:
Smooth wheet roller
Preumatic tyred roller
Sheep foot roller
Vibrator
ব্যাখ্যাঃ Sheep foot roller are used for compacting fine gramed soils such as heavy clays and silty clay. Sheep foot rollers are used for campaction of soil in dams, embankments, subgrade layers in pavements and rail road construction projects.
859. Enlarged head of a supporting column of a flat slab is technically known as:
Supporting end of the column
Top of the column
Capital
Drop panel
ব্যাখ্যা: Column capital between the column and the load thrusting down upon it, broadening the area of the column's supporting surface.
860. The entrained air in concrete-
increase workability
decrease workability
decrease resistance to weathering
increase strength
ব্যাখ্যাঃ Air entrainent increases the workability of concrete without much increase in water cement ratio.