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1.0.0
MCQ
1581. If a solid shaft (diameter 20 cm, length 400 cm, N 0.8105 N/mm2) when subjected to a twisting moment, produces maximum shear stress of 50 N/mm2, the angle of twist in radians, is--
0.001
0.002
0.0025
0.003
1582. The strain energy stored in a spring when subjected to greatest load without being permanently distorted, is called-
Stiffness
Proof resilience
Proof stress
Proof load
1583. Resisting force per unit area is called ---
Strain (বিকৃতি)
Shear (করুন)
Moment (ভ্রামক)
Stress (পীড়ন)
1584. যে দেয়াল ভারাট মাটির পার্শ্বচাপ বহনের জন্য তৈরি করা হয় তাকে বলে-
Boundary wall
Vertical wall
Shear wall
Retaining wall
1585. বেন্ডিং মোমেন্ট ডায়াগ্রামের হেলানো সরল রেখা নিচের কোনটি নির্দেশ করে?
শূন্য লোড
হেলানো লোড
কাপল লোড
সেন্ট্রাল লোড
1586. [100 mm² ক্ষেত্রফলের উপর 100 N বল প্রয়োগ করলে সঠিক পীড়ন কত হবে?)
0.1 MPa
0.01 MPa
1 MPa
1 Kpa
1587. 100 N force is applied on an area 1000 mm². Choose the correct stress.
0.1 MPa
0.01 MPa
1 MPa
1 Kpa
1588. A welded joint as compared to a riveted joint has............. strength.
same
more
less
four times
Explained:-Welded joint provides greater strength, Riveted joint lesser strength as compare to riveted strength. Riveted joints are generally heavier than welded joints.
1589. To determine the force in BD of the truss shown in the given figure a section is passed through BD, CD and CE, and the moments are taken about --
A joint
B joint
C joint
D joint
1590. Pick up the correct statement from the following:
A wire wound in spiral form, is called a helical spring
The pitch of a close coil spring, is very small
The angle made by the coil with horizontal, is called the angle of helix
All the above
1591. Resisting force per unit area parallel to plane called --
Bending stress
Axial stress
Torsional stress
Shear stress
1592. Calculate the maximum deflection of a cantilever beam with UDL on entire span of 3 m. The intensity of UDL be 25kN/m. Take El as 4000 kN/m² --
0.052 m
0.076 m
0.063 m
0.069 m
1593. The factor of safety due to sliding for the retaining wall is generally taken as-
1
1.5
2
4
Explained:-The factor of safety against sliding is defined as force preventing sliding along the bottom divided by the force that will cause sliding along the bottom surface. Factor of safety should not be less than 1.5 for sliding condition.
1594. বেন্ডিং মোমেন্ট ডায়াগ্রামের হেলানো সরল রেখা নিচের কোনটি নির্দেশ করে?
শূন্য লোড
হেলানো লোড
কাপল লোড
সেন্ট্রাল লোড
Explained:- মসৃণ বক্ররেখা সমভাবে বিস্তৃত লোড নির্দেশ করে। পরিবর্তনশীল বক্ররেখা ত্রিভুজাকার লোড নির্দেশ করে আর উল্লম্ব রেখা ও রেখার মান কাপল লোড নির্দেশ করে।
1595. তলের সমান্তরালে একক ক্ষেত্রফলের উপর প্রতিরোধী বলকে--- বলা হয়।
Bending stress
Axial stress
Torsional stress
Shear stress
1596. The ratio of lateral strain to axial strain of a homogeneous material, is known --
Yield ratio
Hooke's ratio
Poisson's ratio
Plastic ratio
1597. The neutral axis of a beam is subjected to........
zero
minimum
maximum tensilie
maximum
Explained-There is no load acting on neutral axis so bending stress on the neutral axis is zero, but shear stress are maximum at neutral axis.
1598. The bending strees in a beam at neutral axis is-
zero
minimum
maximum
none of these
Explained:-There is no load acting on neutral axis so bending stress on the neutral axis is zero, but shear stress are maximum at neutral axis
1599. A short column (30 cm x 20 cm) carries a load P1 at 4 cm on one side and another load P2at 8 cm on the other side along a principal section parallel to longer dimension. If the extreme intensity on either side is same, the ratio of P1 to P2 will be--
2/3
3/2
8/5
5/8
1600. A wall constructed to resist the leteral pressure of an earth filling is called -
Boundary wall
Vertical wall
Shear wall
Retaining wall