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
View AnswerQ22. | 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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