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### Engineering

ISBT Reasoning for all banking PO,Clerk,IBPS PO,Railway,SSC,IAS,OAS Exams

##### 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
##### 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
##### 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
##### 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
##### 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
##### 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
##### 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
##### 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.