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DEWA Electrical Engineering Interview Questions
Questions Answers Views Company eMail

What is the minimum insulation value required for a cable between phase to phase and phase to earth of 380 Vac 50Hz circuit, having load arround 800 amps.

2 3860

what is second harmonic, how is effect transformer ?.

2 7260

what is the voltage of insulation megger that should be used for measuring the resitance of 66kv equipments.

3 5404

what is automatic voltage regulator?we can control the vlotage by using fuzzy controller in matlab?why we go for fuzzy?




Greeting to all members, How to calculate spill current when we have different ratio CT and Class for REF(Low Imp) I have 500/1A 5P20 @line side n 400/1A CL.X @ Neutral.


why we are testing cables with DC supply not with AC supply?

9 19314

why the impedence of the transformer is expressed in percentage?

3 6223

can we use ZNyn11 transformer instead of Dyn11 transformer in distribution for effectively eliminating harmonics from the industrial loads.


what is the function of step up transformer?

1 1418

How to select the cable and voltage drop in circuit?


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Un-Answered Questions

Q explain the following ? a. multiple wave campaign b. recurring campaign c. event triggered campaign


how we have to face the interview?


(CH2)n + nO2. ---->Co2 + nH2O + energy what is this mean with details


What is meant by load angle of an alternator? Upon what factors does the load angle depend?


explain all the classes with example


What is test management?


why does bitumen heated from top side bt not from bottom side€


what is test scenario and test condition?


For how long should prepayments be carried in the books as fictitious asset and when is it ideal for a new coy to pay tax


The OS is a program that uses various data structures. Like all programs in execution, you can determine the performance and other behavior of the OS by inspecting its state - the values stored in its data structures. In this part of the assignment, we study some aspects of the organization and behavior of a Linux system by observing values of kernel data structures exposed through the /proc virtual file system. The /proc virtual file system: Linux uses the /proc file system to collect information from kernel data structures. The /proc implementation provided with Linux can read many different kernel data structures. If you cd to /proc on a Linux machine, you will see a number of files and directories at that location. Files in this directory subtree each corresponds to some kernel data structure. The subdirectories with numeric names contain virtual files with information about the process whose process ID is the same as the directory name. Files in /proc can be read like ordinary ASCII files. You can open each file and read it using library routines such as fgets() or fscanf(). The proc (5) manual page explains the virtual files and their content available through the /proc file system. Requirements in detail: In this part, you are asked to write a program to report the behavior of the Linux kernel. Your program should run in two different versions. The default version should print the following values on stdout: • Processor type • Kernel version • The amount of memory configured into this computer • Amount of time since the system was last booted A second version of the program should run continuously and print lists of the following dynamic values (each value in the lists is the average over a specified interval): • The percentage of time the processor(s) spend in user mode, system mode, and the percentage of time the processor(s) are idle • The amount and percentage of available (or free) memory • The rate (number of sectors per second) of disk read/write in the system • The rate (number per second) of context switches in the kernel • The rate (number per second) of process creations in the system If your program (compiled executable) is called proc_parse, running it without any parameter should print out information required for the first version. Running it with two parameters "proc_parse " should print out information required for the second version. read_rate represents the time interval between two consecutive reads on the /proc file system. printout_rate indicates the time interval over which the average values should be calculated. Both read_rate and printout_rate are in seconds. For instance, proc_parse 2 60 should read kernel data structures once every two seconds. It should then print out averaged kernel statistics once a minute (average of 30 samples). The second version of your program doesn't need to terminate.


Write a Select Query to display title for each group of records, which are collected with Compute Clause? Like titlefield column-A column-B ..... ..... ..... Sum ... titlefield column-A column-B ..... ..... ..... Sum ...


A. State in your own words what Little’s Law means. Describe an example that you have observed where little’s Law applies. B. “You don’t inspect quality into a product; you have to build it in.” Discuss the implications of this statement


How to Align maximized forms?


How is propeller fitted in shaft?


How can i disable closing stock in trial balnce in tally?


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