come back

after  a small hiatus, we are back on track. starting this sunday, i will solve two questions from previous year IAS/IES papers.

IAS 1988 [8(a)]

5) State the objectives of work-study?

s)Work Study is the systematic examination of the methods of carrying out activities such as to improve the effective use of resources and to set up standards of performance for the activities carried out.
It essentially consists of method study and work measurement. some of the objectives of work study are:

1. Critical study of current methods of doing job in order to develop newer and better methods of doing job.
2. To find the best method of doing given job with the integration of Men, Machine and Material.
3. To improve productivity by eliminating all types of wastage.
4. To determine standard time for doing a given job.
5. To bring in better material flow and operational efficiency.

IAS 1988 [7(a)]

4) Explain the effectiveness of the stock-Time diagram of controlling of stock.

S)

    Stock- Time control chart as shown above, is a useful tool in stock level management. It assumes uniform sales structure over the time period which is not so in realistic business environment. Yet, it is useful tool for effective planning of many situations with adaptations. 

IAS 1988 [5(d)]

3) How ECM differs with EDM with respect to the mechanics of material removal and energy resources?

S) Electro Chemical Machining:
                                      Electrochemical Machining (ECM) is a non-traditional material removing process which uses electrochemical process instead of traditional machining methods.
It is used to process hard , brittle materials with high sensitivity. The material removal is accomplished by anodic dissolution with rapidly flowing electrolyte. The tool is the cathode and the work piece is the anode.

Electrical discharge machining (EDM): 
 removes metal by discharging electric current from a pulsating DC power supply across a thin inter electrode gap. The gap is filled by a dielectric fluid, which becomes locally ionized. 

IAS 1991 1(D)

2. Explain what you understand by Gyroscopic Stabilization. Illustrate with the help of a sketch how this is carried out in ships. Obtain a relation between the Gyroscopic stabilization if the waves be sinusoidal?

S) Gyroscopic Stabilization:
                                   
            Stabilization of the moving object can be achieved by using Gyroscopes.  

IES2001[1(o)]

1) Distinguish between Stress Concentration Factor and stress intensity factor?

S)The Stress Concentration Factor is important parameter in determining crack initiation whereas stress intensity factor helps in determining crack growth.
Stress Concentration Factor:
It is defined as the ratio of peak stress at the root of notch to the nominal stress which would be present if a stress concentration didn't present.
Stress intensity factor:
A scaling factor used to describe the intensification of applied stress.

Cracking IES/IAS

In any competitive exam, practice of previous papers constitutes very important part of the preparation. Interestingly i find not a single book on Engineering Subjects with fully solved problems. My goal is to solve all the IES/IAS Mechanical Engineering questions and put at one place so that future aspirants can access it for free. If any correction is required in any question, kindly comment in the relevant post so that i can edit the post (I am going to post each question as a post)....
Hop into the blog and have a happy reading....