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How to Remove Virus from Android phone or Tablet | Engineer Hammad

How to Remove Virus from Android phone or Tablet, virus android remove, anti virus remove virus, tablet virus
If you think your android mobile or tablet is going slow and you think your device is under virus attack, do not worry  i have a good news for you how to remove virus and malware from your android mobile or tablet.

*How to Take Screenshots on Android Very Easy Steps

How to find virus:

First thing is why you think your device is under virus attach, If you don't know i tell you.

1. Some time you see an ad wants to convince you so your mobile is infected.
2. You are seeing some apps to be downloaded.
3. Pop ups and your device misbehave 

How to avoid android virus, gunpoder virus and mazar virus:

Mostly android viruses delivered thorough apps that you install in your mobile. So if your android mobile or tablet does not already have virus then better way of avoid is: 
1. Do not install software from any where.
2. Only use Google Play / Play Store / App Store. (Google product).

Gunpoder virus hits the headlines after Palo Alto networks discovered. It could also sneak on your device via Nintendo game emulator intalled outside Google play. It is seen that gunpoder do not affect UK user as of yet.

Mazar Virus is comes in different way like you receive a link via text message that download Tor browser. Now a day it is affecting devices in denmark.

If You install software from google play and then also an app is disturbing you and is not uninstalling then read this post how to uninstall an app from android mobile. 
Anti Virus is not recommended every time. Some time anti virus do not do anything and device goes slow down as you know its a heavy application.

If your device it infected with virus and you are sure then save all of your data and reset your android mobile as factory reset, it will remove all software and will be like a new phone. After reset you will not able to find anything in your mobile, it mean you will lose all of your data.

How to remove virus form Android:

Put your device on safe mode. this prev

Sample Contract of Employment | job offer letter template | offer of employment letter


Sample contract of employment:


Employment Offer Letter

Dear Mr. (Name of employee)

We are pleased to confirm our offer and your acceptance to Join .......(Company Name)...... subject to the following terms and conditions for the position of Engineering Supervisor.

1. Release letter from previous employer:
This offer is conditional upon a no objection letter for transfer by your current sponsor.

2. Employment position:
You will be employed as Engineering Supervisor, your duties will include but not limited as per job description. You will be responsible on all documents and job handheld to you.

3. Start date and terms of employment:
The initial contract will commence once your transfer will be done by (Company name) and for a period of 2 years.

4. Working conditions:
You will be provided in order for you to carry out your work with confidentially. It is your responsibility to take proper care of equipments.

5. Working Hours:
Office hours are 8:00 am to 5:30 pm (45 hours weekly) or such other hours as may be necessary or as directed. It is envisaged that regular overtime may be required to meet the requirements of our clients. Lunch time will be taking from 12:30 pm to 1:30 pm.

6. Vacation Entitlement:
You will be entitled to 30 working days leave on completion of 24 months job period and a return ticket or 42 days without ticketing as per Saudi Labor Law, plus local public holidays on confirmation of your appointment and contract.

7. Medical Leave:
You are entitled to have 10 days of paid sick leave per calendar year after 3 months of provisionary. Employee who is absent due to illness for more than 2 consecutive days must produce a doctors certificate.

8. Remuneration:
Your basic salary will be at the rate of 5000 SAR per month. Salaries are reviewed on yearly basis and increase may occur upon job performance, Accommodation will be 3 basic salaries per year, transportation is 500 SAR. Communication, internet, and medical insurance will be provided by company.

9. Medical Cover:
You will be entitled cover once your transfer will be done with us.

10. Offer Acceptance:
If you wish to accept this offer on the term and conditions set out above, please sign and return by email the enclosed duplicate copy of this offer within 7 days of the date of this letter.

We Know you will find working here to be a rewarding and career enhancing experience.

We are excited about the opportunity to work with you as we create an even stronger company.

Your Sincerely

Company Logo and HR Sign

Quality Assurance Interview Questions | Qc Interview Questions


Interview Questions for QA / QC – Electrical & Instrumentation:

General interview questions:

1. Define ITP. 

All inspections shall be done on the basis of approved ITP (Inspection Test Plan) which consists of the following sections;
  • Activity Description
  • Responsible Person
  • Quality Inspection Activity
  • Reference Drawings and Specifications
  • Acceptance Criteria
  • Verifying Documents (ITR’s)
  • Intervention Points

2. Explain Intervention Points.

W: Witness, S: Surveillance, A: Approval, M: Monitoring, R: Review, H: Hold

3. What is Method Statement?

This is construction document on which basis construction work shall be performed at site.

4. What is NCR, CAR & PAR ?

NCR: Non Conformance Report 
CAR: Corrective Action Report 
PAR: Preventive Action Report 

5. What is MAR and MRIR? 

MAR: Material Approval Request 
MRIR: Material Receiving Inspection Report

Electrical Related Questions:

1. What you knows about International Standards like IEEE ,IEC, NEMA ,NFPA and API?

IEEE stands for Institute of Electrical and Electronics Engineers.
IEC stands for International Electrotechnical Commission.
NEMA stands for National Electrical Manufacturers Association.
NFPA stands for National Fire Protection Association.
API stands for American Petroleum Institute.

2. IEC 60079-14 and IEC 60079-17 used for which purpose? 

IEC 60079-14 is for Electrical Installations in Hazardous Areas and IEC 60079-17 is for Electrical Installations, Inspection and Maintenance. 

3. Which type of inspections you have performed regarding Electrical work?

Power Control and Earthing Cables Installation, LV/MV Switchgear Installation, Transformer Installation, Power Distribution Boards Installation, UPS Panel and Battery Installation, Earthing System Installation, Lighting System Installation, Motors Solo Run & Installation check and CP System Installation etc. 

4. What will you check during Lighting Final Installation and which drawing shall be used for this activity? 

Lighting final installation shall be checked as per Typical Installation Detail Drawing and Lighting & Small Power layout drawing, also we have to check the existing inspection reports related to this activity like Cable Laying Inspection report, Cable IR/Continuity test report, Glanding & Termination inspection report. 

5. By how many ways we can get the Cathodic Protection ? 

Cathodic Protection (CP) may be achieved in either of two ways. By the use of an impressed current from an electrical source, or by the use of sacrificial anodes. 

6. What are the main points, which we have to check during Motor Installation inspection? 

The important points that we have to check during Motor Installation are as follows; 
  1. Check Rated Voltage, Current, Speed, Frequency, IP Rating and Temp. class.
  2. Anti-condensation heaters installed continuity and IR test done. Check Phase to earth resistance (wherever applicable).
  3. Verify Current Transformer (CT) installation, connection etc are correct. (wherever applicable).
  4. Check stator winding connection and ensure that complies with nameplate/ data sheet.
  5. Check auxiliary terminal boxes (space heater, bearing/winding temperature/vibration etc).
What is a Capacitor | Capacitor Construction 
Capacitor symbol | Capacitor Types

Instrumentation Questions:

1. What you knows about explosion proof areas/zones ? 

Zone 0, 1 & 2 for Gases and vapours. Zone 20, 21 & 22 for Dust protection. 

2. What you know about Temperature classes for Electrical Instruments/Equipments, if T3 is mentioned over there on any instrument what that means? 

It is surface temperature of a piece of electrical equipment. With a temperature classification of T3, surface temp. of electrical equipment will not rise above 200 °C. 

3. Which drawing shall be used for Final Instrument Installation inspection? 

Typical Instrument Installation drawing. 

4. If one Pressure Transmitter is installed at site, how many inspections are related to that one instrument? 

  1. Cable Tray Installation Inspection.
  2. Cable Laying Inspection.
  3. Cable IR/Continuity Test Inspection.
  4. Cable Glanding & Termination Inspection.
  5. Instrument Tubing Installation Inspection.
  6. Final Instrument Installation Inspection 

5. Which drawing shall be used for Instrument Tubing Installation inspection?

Hookup drawing shall be used for Tubing Installation of any Instrument. 

6. During material inspection of a Level Transmitter (LT), what will you check and with reference to which documents? 

Material inspection shall be done as per approved ITP, data sheet and MR/MAR. Also following necessary documents shall be checked;
  1. Instrument Calibration Report.
  2. Product Catalogue/Installation Manual.
  3. GA Drawings iv. Vendor Data sheet.
  4. Inspection Reports (during manufacturing) 

7. Did you worked on F&G (Fire and GAS) system, if yes please specify which type of F&G instruments you have worked on? 

Gas detectors (Flammable Gas Detector, Toxic Gas Detectors, Hydrogen Gas Detector), Flame detectors, Heat detectors, Smoke detectors, Beacons/Horns, Manual call points. 

8. At the stage of material inspection, which report we have to prepare?

MRIR: Material Receiving Inspection Report 

9. What is the abbreviation of DCS, ESD and SCADA system ? 

DCS: Distributed Control System 
ESD: Emergency Shutdown System 
SCADA: Supervisory Control and Data Acquisition System 

10. Why we use Analog and Digital I/O cards in DCS Control Module? Which inputs are Analog and which are Digital? 

Analog I/O cards shall be used for Analog inputs like, RTD, Thermocouple etc. And Digital I/O cards are used for Digital inputs like Pressure switches etc. 

11. What is IP rating? 

IP stands for Ingress Protection, IP classifies and rates the degree of protection provided against intrusion (body parts such as hands and fingers), dust, accidental contact, and water by mechanical casings and electrical enclosures. 

12. How we check the cable Insulation Resistance (IR) of multi triad cable. 

We have to test the cable as following;
  1. Triad to Triad.
  2. Triad to Screen.
  3. Triad to Armour.
  4. Core to Core.
  5. Core to Screen.
  6. Core to Armour 

13. What we have to check during loop checking of a control valve? 

We have to note the following readings;
  1. Controller output.
  2. I/P Converter Output.
  3. Valve Positioner Output.
  4. Valve Position 

14. What is ‘Accuracy’ in Instrument Calibration? 

Accuracy is the term used to describe the degree of conformity of a measured or calculated value to its actual or specified value. 

15. What is calibration span? 

The calibration Span is defined as Upper Range Value (URV) minus Lower Range Value (LRV). For Zero-based instruments, % Span is also known as % of Full Scale (% FS). 

16. What is Instrument Error in calibration? 

The difference between values indicated by an instrument and those that are

Qc inspector Jobs in UAE | Ocher Consultants


Positions: QC Inspector

Number of Positions: Two (2)
Minimum Qualification: A Bachelor’s degree
    Minimum Experience: 1-3 Years
    Location: Sharjah, UAE

Job Context: 

Responsible for coordinating, facilitating, and implementing quality control standards in Production/Plant. Taking samples periodically from different stages of production and perform quality tests. 

Key Responsibilities: 

• Ensures that products confer with respective quality standards and customer specifications at in-process and final quality points.
• Ensure statistical process control is effectively maintained. 
• Provide support to Operations, Engineering, Sales and other departments in interacting with customers, suppliers and other vendors.
• Develop, implement, and coordinate quality training programs for all Production personnel.
• Review quality Control standards, existing policies & procedures to evaluate the effectiveness of the production quality programs.
• Ensures proper handling and maintenance of QC equipment.
• Ensures that safety standards and procedures are followed.
• Any other task as assigned by the management.
Skill Sets:
• Ensure all aspects of the Quality Control Department including Quality Control, Calibration, and Document Control are implemented and complied. 
• Manage and maintain database for quality investigation reports. 
• Participate in employee training on Quality related systems. 
• Provide Quality Control support for Engineering, Manufacturing, Supplier Control and Product Development. 
• Quickly review suspect material and provide disposition instructions. 
• Assure manufacturing problems are quickly identified, documented and actions are taken to repair,
• Follow schedule for reviews and improve quality plans and inspection requirements.

Procedure to Apply: 

Interested applicants may immediately submit their CV along with latest snap & scan copy of valid passport as soon as early.
Please clearly mention the position applied for in the subject line. CV’s without subject will not be considered. Only shortlisted candidates will be called for Skype Interview (if required).

What is Electrical Resistance | Electrical Resistance Formula


What is Electrical Resistance?

Electrical resistance of an electrical conductor is the defined as:
An electrical quantity which measure how conductor material reduces electric currant flow through it.
Electrical resistance is measured in ohms (Ω).

Electrical resistance formula:

By ohm's law R is equal to V divided by I where,

R is the resistor's resistance in Ohms (Ω).
V is the voltage drop on resistor in Volts (V).
I  is the current of resistor in amperes (A).

Resistance in Series:

In series circuit total resistance of the circuit is equal to the sum of all resistance connected.
And the formula of resistance in series is:
RTotal = R1R2R3+...
In series circuit current will be same in every resistor and voltage accross the circuit is the sum of voltage across the each component.

Resistance in Parallel:

In parallel circuit total resistance formula used is:
RTotal = 1/R1+ 1/R2+ 1/R3+...
As circuit shown in parallel circuit current will be divided through each resistor and voltage will apply same on each resistor.

Resistivity and conductivity:

Read More:
1. RF Engineer Interview Questions | Drive Test Engineer Interview Questions
2. What is 2g 3g 4g | Difference Between 2g 3g and 4g
3. What is a Capacitor | Capacitor Construction
4. Capacitor symbol | Capacitor Types

Format Hard drive Windows 7 | How to Format a Hard Drive in Windows 7


Format a Drive in Windows 7, 8, 10:

You can format hard drive windows 7 or any windows like xp, vista, 8 and 10 by following below mention easy steps.
  1. First of all open my computer.
  2. Your partitions will be showing like local disc c, d, e. or in windows 7 like OS (C), OS (D) etc.
  3. If you connect your external hard disk, memory card or any other portable drives that will also show here.
  4. Now the drive that you want to format right click on that drive as shown in picture you will see format in options.
  5. Click on format then you will see this tab.
  6. Now check Quick format box and click on start button.
  7. You are done, after some seconds your drive will format.

What is 2g 3g 4g | Difference Between 2g 3g and 4g


What is 2g 3g 4g: 

What is 2g 3g 4g, Difference Between 2g 3g and 4g
If you are searching about what is 2g 3g 4g , understand here G stands for generation of mobile network. Now a days mobile network operators are offering 4g and 4.5g services in different countries. In 2015-2016 4g and 4.5g is mostly used technology.

What is 2G:

2g stand for second generation, it is a wireless telephone technology. 2g is also known as GSM (global system for mobile). If we talk about its benefits, there are 3 primary benefits of 2g. 
2G system was significantly more efficient on the spectrum allowing for far greater penetration level.
Data services like text messaging, picture messaging and mms was introduced by 2g networks.
Now a day 2g is superseded by new technologies like 2.5g, 2.75g, 3g, 4g and 4.5g. However 2g is still used in many parts of the world.

What is 3g:

3g is a term refers to third generation of wireless mobile networks. This short form (3G) is set by international telecommunication Union (ITU).
3g broadband offers greater flexibility and services and is more efficient then its predecessor 2g.

What is 4g:

Every one is shouting 4g, 4g. What is 4g?
4G is a fourth generation mobile networks technology as like 3g was third generation.
4G / LTE (long term evaluation) was arrived in UK for the first time in October.
4G LTE is offering for faster and more reliable mobile broadband internet for smart phones, tablets and laptops.
Lastly 4G is 5 times faster then 3g. Theoretically we can get 100 Mbps in lab but its not in real life. the average speed you can get is 30 Mbps maximum is real.
You can only use it on 4g internet supporting devices.

Difference Between 2g 3g and 4g: 

difference between 2g 3g 4g, what is 2g 3g 4g, what is 2.5g, 3g and 4g

difference between 2g 3g 4g, what is 2g 3g 4g, 2.5g and 3g and 4g
what is Difference Between 2g 3g and 4g?
As the name would recommend, 1G was the primary generation of mobile networks. Here essentially, radio signals were transmitted in ‘Analogue’ type and expectedly, one wasn't able to do a lot of aside from sending text messages and creating calls. however the largest disadvantage, however came within the variety of restricted network availability, as within the network was available solely inside the country.

2G networks on the opposite hand, were supported narrow band digital networks. Signals were transmitted within the digital format and this dramatically improved the standard of calls and additionally reduced the quality of information transmission. the other advantage of the 2G network came within the variety of Semi world Roaming System, that enabled the property everywhere the planet.

Between 2G and 3G there was a brief innovate between wherever mobile phones became sleeker and a lot of ‘pocketable’ if we are able to call it that. this can be popularly brought up as 2.5G wherever the number of radio waves to be transmitted was a lot of lower. This successively had an impression on the form and structure of mobile phones. however most of all, 2.5G helped within the ushering of GPRS (General Pocket Radio Service).

The third generation of mobile networks has become popular mostly because of the flexibility of users to access the web over devices like mobiles and tablets. The speed of information transmission on a 3G network ranges between 384KBPS to 2MBPS. this implies a 3G network really permits for a lot of information transmission and so the network allows voice and video calling, file transmission, net aquatics, online TV, read high definition videos, play games and far a lot of.  3G is that the best choice for users World Health Organization ought to perpetually keep connected to net.

4th Generation of mobile networks ar believed to produce several price accessorial options. additionally to any or all the 3G facilities, knowledge transmission is believed to travel through the roof with speeds move between 100MBPs to 1GBPS. Phew! Happy talking, surfing, conferencing, chatting, networking, partying, or no matter you would like to try and do on your cell phone.


Difference Between 2g 3g and 4g, what is 2g 3g 4g, 2g and 3g difference, what is 4g, what is 3g, what is 2g, what is 1g.

Capacitor symbol | Capacitor Types


Capacitor Symbol:

There are different types of capacitors, and the basic capacitor symbol for every capacitor is same like shown in fig.
In this fig three capacitor symbols are showing.
Read full article: What is a capacitor.

Capacitor symbol with picture:

Polarize and non-polarize capacitor symbol:

All electrolytic capacitor are polarizes capacitor.
A type of capacitor that has no implicit polarity, it can be connected either way in a circuit is non polarized capacitor.
Mica, Ceramic and some electrolytic capacitors are non-polarized. 
You'll also sometimes hear people call them "bipolar" capacitors.

More symbol of Capacitor:

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