Engineering
ISBT Reasoning for all banking PO,Clerk,IBPS PO,Railway,SSC,IAS,OAS Exams
Q41. | The resistance of a strip of copper of rectangular cross-section is 2 ohm. A metal of resistivity twice that of copper is coated on its upper surface to a thickness equal to that of copper strip. The resistance of composite strip will be - ( DRDO Exam. 2013) |
| 1) | 6 ohms |
2) | 4/3 ohms |
| 3) | 3/2 ohms |
4) | 3/4 ohms |
| 5) | None of these |
Answer : 4/3 ohms
Explanation : Copper and coated
metal strips have resistance of 2 ohms and 4 ohms respectively. These two
strips are in parallel. Hence the resistance of the composite strip will be
(2x4) / (2+4) = 4/3 ohms.
View AnswerQ42. | What is the current rating of MCB, when it is used for 165 litre refrigirators ? |
| 1) | 2 amps |
2) | 4 amps |
| 3) | 1.5 amps |
4) | 7.5 amps |
| 5) | None of these |
Answer : 2 amps
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Q43. | A network consists of linear resistors and ideal voltage source. If the value of the resistors are doubled, then voltage across each resistor is - |
| 1) | halved |
2) | doubled |
| 3) | increases four lines |
4) | not changed |
| 5) | None of these |
Answer : not changed
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Q44. | Induction type instruments can be used is -
|
| 1) | DC circuit only |
2) | AC circuit only |
| 3) | Both AC and DC circuits |
4) | Niether AC nor DC circui |
| 5) | None of these |
Answer : AC circuit only
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Q45. | What is the power in the given circuit ?
|
| 1) | 3.92 kW |
2) | 28.6 W |
| 3) | 2.80 W |
4) | 9.8 W |
| 5) | None of these |
Answer : 9.8 W
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Q46. | In the electrical network shown in the figure, the potential difference across 3 resistance will be : |
| 1) | 12 V |
2) | 2.4 V |
| 3) | 24 V |
4) | 36 V |
| 5) | None of these |
Answer : 24 V
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Q47. | In the circuit shown in figure the reading of ammeter A is - |
| 1) | 0.2 A |
2) | 0.4 A |
| 3) | 0.6 A |
4) | 0.8 A |
| 5) | None of these |
Answer : 0.6 A
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Q48. | The flow and timing of data to and from the microprocessor is regulated by -------- . |
| 1) | control pins |
2) | address pins |
| 3) | data pins |
4) | power pins |
| 5) | None of these |
Answer : control pins
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Q49. | The register which contains the instruction to be executed is called -- |
| 1) | instruction register |
2) | index register memory address register |
| 3) | memory address register |
4) | memory data register |
| 5) | None of these |
Answer : index register memory address register
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Q50. | Which of the following is correct that a microprocessor contain ? |
| 1) | most of the control and arithmetic logic functions of a computer |
2) | most of the RAM |
| 3) | most of the ROM |
4) | peripheral drivers |
| 5) | None of these |
Answer : most of the control and arithmetic logic functions of a computer
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