Engineering
ISBT Reasoning for all banking PO,Clerk,IBPS PO,Railway,SSC,IAS,OAS Exams
Q91. | A very brief, high voltage spike on an ac power line is called as - |
| 1) | A bleeder |
2) | An arc |
| 3) | A transient |
4) | An avalanche |
| 5) | A clipped peak |
Answer : A transient
View AnswerQ92. | Which of the following is not a common form of data transmission ? |
| 1) | Polarization modulation |
2) | Frequency modulation |
| 3) | Amplitude modulation |
4) | Phase modulation |
| 5) | Pulse modulation |
Answer : Polarization modulation
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Q93. | A diode can be used as a frequency multiplier because of its - |
| 1) | Junction capacitance |
2) | Non linearity |
| 3) | Avalanche voltage |
4) | Forward breakover |
| 5) | Charge carrier concentration |
Answer : Non linearity
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Q94. | If 60 J of energy are available for every 15 C of charge, what is the voltage ? |
| 1) | 4 V |
2) | 60 V |
| 3) | 15 V |
4) | 0.25 V |
Answer : 4 V
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Q95. | The pressure energy goes on changing into kinetic energy in case of - |
| 1) | Pelton turbine |
2) | Francis turbine |
| 3) | Kaplan turbine |
4) | Francis and Kaplan |
| 5) | None of these |
Answer : Francis and Kaplan
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Q96. | The pressure energy goes on changing into kinetic energy in case of - |
| 1) | Pelton turbine |
2) | Francis turbine |
| 3) | Kaplan turbine |
4) | Francis and Kaplan |
| 5) | None of these |
Answer : Francis and Kaplan
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Q97. | A turbine is having specific speed of 400. Then the turbine would be
|
| 1) | Kaplan turbine |
2) | Francis turbine |
| 3) | Pelton turbine |
4) | only 2 & 3 |
| 5) | None of the above |
Answer : Kaplan turbine
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Q98. | A turbine is having specific speed as 100. Then the turbine would be - |
| 1) | Kaplan turbine |
2) | Francis turbine |
| 3) | Pelton turbine |
4) | Steam turbine |
| 5) | None of these |
Answer : Francis turbine
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Q99. | The axial flow reaction turbine, in which vanes are fixed to the hub and they are not adjustable, is known as - |
| 1) | Kaplan turbine |
2) | Francis turbine |
| 3) | propeller turbine |
4) | Pelton turbine |
| 5) | None of these |
Answer : propeller turbine
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Q100. | In case reaction turbine, the total head at the inlet of a turbine consists of - |
| 1) | pressure energy and kinetic energy |
2) | kinetic energy only |
| 3) | pressure energy only |
4) | only 1 & 2 |
| 5) | None of the above |
Answer : pressure energy and kinetic energy
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