Engineering
ISBT Reasoning for all banking PO,Clerk,IBPS PO,Railway,SSC,IAS,OAS Exams
Q1. |
| 1) | R1 | 2) | R2 |
| 3) | R3 | 4) | R4 |
| 5) | None of these | ||
Answer : R3
View AnswerQ2. | 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 AnswerQ3. |
|
| 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
View AnswerQ4. |
|
| 1) | mmf | 2) | emf |
| 3) | Resistance | 4) | Reluctance |
| 5) | None of these | ||
Answer : emf
View AnswerQ5. | 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 :
Explanation :
Sin wtCos wt Differentiating
Cos wt2 Sin wt
An input of 10 Cos wt will cause a
View AnswerQ6. | 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.
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.
View AnswerQ7. |
|
| 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.
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.
View AnswerQ8. |
|
| 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.
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 AnswerQ9. |
|
| 1) | 2 amps | 2) | 4 amps |
| 3) | 1.5 amps | 4) | 7.5 amps |
| 5) | None of these | ||
Answer : 2 amps
View AnswerQ10. | 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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