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SSC JE 2019-20: Technical Quiz - 98

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Question 1

Magnitude of shear stress induced in a shaft due to applied torque varies from:

Question 2

A propped cantilever of span ‘L’ fixed at A and simply supported at B is subjected to concentrated load ‘W’ at centre, reaction at B:

Question 3

For economical spacing of roof truss, if t, p and r are the costs of truss, purlin and roof covering respectively then:

Question 4

A propped cantilever is subjected to a concentrated load of 16 kN at the centre of the span. The length of beam is 4 m. The flexural rigidity EI = 4 x 102 kNm2. The reactions at the fixed end and simply supported end are:

Question 5

Group I given a list of test methods and test apparatus for evaluating some of the properties of ordinary Portland cement (OPC) and concrete. Group II gives the list of these properties.
Group I
P. Le chatelier test
Q. Vee-Bee test
R. Blaine air permeability test
S. The Vicat apparatus
Group II
1) Soundness of OPC
2) Consistency and setting time of OPC
3) Consistency or workability of concrete
4) Fineness of OPC
The correct match of the items in Group I with the items in Group II is

Question 6

In the pre-tensioning method, which of the following statements are correct?
1) The tension in the concrete is induced directly by external force
2) Tension is induced in the tendons before concreting
3) Concrete continues to be in tension after pre-stressing

Question 7

Statement (I): For stability of floating bodies, center of gravity(G) will always be below center of buoyancy(B).

Statement (II): When B is above G then small angular displacement will set up a restoring couple which will bring the body back to its original position.

Question 8

Direction: Each of the following items consists of two statements, one labelled as the ‘Statement (I)’ and the other as ‘Statement (II)’. Examine these two statements carefully and select the answers to these items using the codes below:
Statement (I): Gases are normally formless fluids and can be changed to liquid or solid states by change of temperature and pressure
Statement (II): Smog refers to the occurrence of a heavy, cloudy, hazy floating layer in the atmosphere formed by a mixture of smoke, dust, fog and mist.

Question 9

The surface tension in a soap bubble of 50 mm diameter with its inside pressure being 2.5 N/m2 above the atmospheric pressure is

Question 10

A centrifugal pump has a impeller of 30 cm diameter and runs at 1000 rpm giving best efficiency. It delivered 1.2 m3/minute against a head of 25m. What is the non-dimensional specific speed (based on flow expressed in l.p.s.)? Take
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Jun 10ESE & GATE CE