Questions

Q:

RADAR is used for

A) detecting and locating the position of objects such as Aeroplanes B) locating submerged submarines
C) locating geostationary satellites D) receiving a signals in a radio receiver
 
Answer & Explanation Answer: A) detecting and locating the position of objects such as Aeroplanes

Explanation:

RADAR - RAdio Detection And Ranging.

A radar system consists of a transmitter producing electromagnetic waves in the radio or microwaves domain, a transmitting antenna, a receiving antenna (often the same antenna is used for transmitting and receiving) and a receiver and processor to determine properties of the objects. 

 

Radar is an object-detection system that uses radio waves to determine the range, angle, or velocity of objects. It can be used to detect aircraft, ships, spacecraft, guided missiles, motor vehicles, weather formations, and terrain.

 

Radio waves from the transmitter reflect off the object and return to the receiver, giving information about the object's location and speed.

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Filed Under: Physics
Exam Prep: GATE , CAT , Bank Exams , AIEEE
Job Role: Network Engineer , IT Trainer , Bank PO , Bank Clerk , Analyst

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Q:

If I use the following printf() to print a long int why I am not warned about the type mismatch?

printf ("%d",num );

Answer

When a function accepts a variable number of arguments , its prototype cannot provide any information about the number of arguments and type of those variable arguments. Hence the compiler cannot warn about the mismatches. The programmer must make sure that arguments match or must manually insert explicit typecast.

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Subject: Programming

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Q:

Which is highest dam in world ?

Answer

Jinping-I Dam  in China at 305 m (1,001 ft) high

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Q:

Which of the following is true?

A) It is appropriate to use assertions to validate arguments to methods marked public B) It is appropriate to catch and handle assertion errors
C) It is NOT appropriate to use assertions to validate command-line arguments D) None
 
Answer & Explanation Answer: C) It is NOT appropriate to use assertions to validate command-line arguments

Explanation:

A is incorrect. It is acceptable to use assertions to test the arguments of private methods.

 

B is incorrect. While assertion errors can be caught, Sun discourages you from doing so.

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Filed Under: Programming

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Q:

Describe a time where customer wasn’t happy and what did you do to change it?

Answer

There’s no doubt that working in retail you will encounter an unhappy, disgruntled, or difficult customer.  Learning to hold in your personal feelings, addressing empathy for customers, and representing the company well in order to keep customers coming back are all important skills recruiters will look for when assessing how you deal with uncomfortable situations.


 

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Subject: Retail

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Q:

Which American artist's most famous portrait is that of his mother?

A) Rembrant B) Whistler
C) Vincent Van Gough D) Salava dor Dali
 
Answer & Explanation Answer: B) Whistler

Explanation:
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Filed Under: General Awareness

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Q:

World’s largest aircraft supercarrier USS Gerald R Ford belongs to _____ country.

A) Russia B) India
C) China D) USA
 
Answer & Explanation Answer: D) USA

Explanation:

1. US Navy commissioned world’s largest aircraft carrier, USS Gerald R Ford into the fleet. The commissioning ceremony was held at Naval Station Norfolk, Virginia in presence of US President Donald Trump.

2. USS Gerald R. Ford is the first ship in this new class of nuclear-powered aircraft carriers for the U.S. Navy. The ship is named after the 38th President of the United States Gerald Ford and has been built by Newport News Ship Building Company. The massive 1,106-foot-long carrier is powered by two new generation nuclear reactors.

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Filed Under: General Awareness
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Q:

Ryder Cup is related with which sports?

A) Football B) Golf
C) Badminton D) Cricket
 
Answer & Explanation Answer: B) Golf

Explanation:
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Filed Under: Sports

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