Engineering

ISBT Reasoning for all banking PO,Clerk,IBPS PO,Railway,SSC,IAS,OAS Exams

Q21.

Which of the following is indicate the symbol of P-N diode ?
1) a 2) b
3) c 4) d
5)None of these
Answer : c
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Q22.
At the time of discharging the battery converts ?
1) Mechanical energy into electrical energy. 2) Electrical energy into chemical energy.
3) Chemical energy into mechanical energy. 4) Chemical energy into electrical energy.
5)None of these
Answer : Chemical energy into electrical energy.
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Q23.
What is the condition of perfect truss ?
1) n = 2j - 2 2) n = 2j - 3
3) n = 2j -4 4) n = 2j - 5
5)None of these
Answer : n = 2j - 3
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Q24.
A soil sample has specific gravity of 2.60 and a void ratio of 0.78. What should be the percentage  of water required to fully saturate the soil at the void ratio ?
1) 12 2) 16
3) 30 4) 40
5)None of these
Answer : 30
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Q25.
The valves mounted on the boilers which change the direction of flow of steam by 90° and valves fitted in the pipelines which allow the steam in the same direction are respectively called as _____.
1) Stop valves and junction valves 2) Junction valves and stop valves
3) Junction valves and safety valves 4) Feed safety valves and stop valves
5)None of these
Answer : Junction valves and stop valves
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Q26.
The engine oil at 150 °C is cooled to 80 °C in a parallel flow heat exchange by water entering at 25 °C and leaving at 60 °C. What will be the exchange effectiveness will be _____.
1) 0.36 2) 0.46
3) 0.56 4) 0.66
5)None of these
Answer : 0.56
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Q27.
The amount of heat required to raise the temperature of 1 kg of water from 0°C to the saturation temperature Ts °C at a given constant pressure is defined as _____.
1) Super-heat 2) Entropy
3) Latent heat 4) Sensible heat
5)None of these
Answer : Sensible heat
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Q28.
Which of the following is the chief advantage of die casting ?
1) possibility of incorporating thick sections in small castings 2) casting of inserts is possible
3) wide tolerances are possible 4) high production rates are possible
5)None of these
Answer : high production rates are possible
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Q29.
 If carbon present in cast iron is partly free and partly in combined state, it is called _____.
1) White cast iron 2) Grey cast iron
3) Molten cast iron 4) None of these
5)None of these
Answer : White cast iron
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Q30.
1) R1 2) R2
3) R3 4) R4
5)None of these
Answer : R3
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