Engineering
ISBT Reasoning for all banking PO,Clerk,IBPS PO,Railway,SSC,IAS,OAS Exams
Q31. | if there are b branches and n nodes the number of equations will be |
| 1) | n-1 |
2) | b |
| 3) | b-n |
4) | b-n+1 |
| 5) | None of these |
Answer : b-n+1
View AnswerQ32. | The minimum requirements for causing flow of current are |
| 1) | a voltage source,a resistor, and a switch. |
2) | a voltage source and a conductor |
| 3) | a power source and a bulb |
4) | a voltage source,a conductor,an ammeter and a switch |
| 5) | None of these
|
Answer : a voltage source and a conductor
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Q33. | Due to the existence of which of the following, the current flowing in an electrical circuit ? |
| 1) | mmf |
2) | emf |
| 3) | Resistance |
4) | Reluctance |
| 5) | None of these |
Answer : emf
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Q34. | What is the main purpose of annealing ? |
| 1) | to improve machinability |
2) | to improve magnetism |
| 3) | to increase hardness |
4) | to increase toughness |
| 5) | None of these |
Answer : to improve machinability
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Q35. | The purpose of transmission in an automobile is to vary the - |
| 1) | speed of the automobile |
2) | torque of the automobile |
| 3) | power of the automobile |
4) | fuel efficiency of the automobile |
| 5) | None of these |
Answer : torque of the automobile
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Q36. | Which one of the following is not the advantage of CNC machine ? |
| 1) | Reduces inspection time |
2) | Reduces tooling time
|
| 3) | Higher initial cost
|
4) | Higher rate of production |
| 5) | None of these |
Answer : Higher initial cost
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Q37. | Which one of the following processes is used for removing scratches from the previous operations ? |
| 1) | Enamelling |
2) | Painting |
| 3) | Oxidation |
4) | Polishing |
| 5) | None of these |
Answer : Painting
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Q38. | In a
linear system, an input of 5 sin wt produces an output of 10 cos wt. The output
corresponding to input 10 cos wt will be equal to -
|
| 1) | + 5 sin wt |
2) | - 5 sin wt |
| 3) | + 20 sin wt |
4) | – 20 sin wt. |
| 5) | None of these |
Answer : – 20 sin wt.
Explanation : Sin wtCos wt Differentiating
Cos wt2 Sin wt
An input of 10 Cos wt will cause a
Response of – 20 Sin wt.
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Q39. | For an SCR, di/dt protection is achieved through the use of which of the following series ? |
| 1) | R in series with SCR |
2) | L in series with SCR |
| 3) | RL in series with SCR |
4) | RLC in series with SCR |
| 5) | None of these |
Answer : L in series with SCR
Explanation : For an SCR, di/dt protection is achieved through the used of L in series with SCR. A snubber circuit connected across an SCR is to suppress dv / dt.
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Q40. | The electric field lines and equipotential lines - |
| 1) | Are parallel to each other |
2) | Are one and the same |
| 3) | Cut each other orthogonally |
4) | Can be inclined to each other at any angle |
| 5) | None of these |
Answer : Cut each other orthogonally
Explanation : Since no electric can exist along any surface, all points of which are at the same potential, electric field lines and equipotential lines are orthogonal to each other.
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