Questions

Q:

Gases used in normal welding?

A) Oxygen and Acetylene B) Acetylene and Nitrogen
C) Oxygen, Hydrogen and Acetylene D) Oxygen and Hydrogen
 
Answer & Explanation Answer: A) Oxygen and Acetylene

Explanation:

Normal Gas welding use oxygen-acetylene.

 

Depending on what materials you are welding, there are some more options that might be used.

For example - MIG/TIG use Argon, MAG use an argon-something mix.

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Filed Under: Chemistry
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1 4525
Q:

Which is the highest Plateu?

A) Deccan B) Pamir
C) Colorado D) None
 
Answer & Explanation Answer: B) Pamir

Explanation:

Pamir is the highest of all the platues.It is located in Tibet

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Q:

In case of uniform circular motion, the acceleration is

A) Variable in magnitude but constant in direction B) Constant in magnitude and directed radially inwards
C) Variable in magnitude but tangential to the circle D) Zero
 
Answer & Explanation Answer: A) Variable in magnitude but constant in direction

Explanation:
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Filed Under: Physics

4 4520
Q:

The planet nearest to the Sun is

A) Venus B) Mercury
C) Jupiter D) Saturn
 
Answer & Explanation Answer: B) Mercury

Explanation:
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Filed Under: General Awareness

6 4518
Q:

In a vacuum, all electromagnetic waves have the same

A) Velocity B) Wavelenth
C) Frequency D) All the above
 
Answer & Explanation Answer: A) Velocity

Explanation:

When traveling in a vacuum, electronic waves from the electromagnetic spectrum all travel at the same speed. Velocity is speed with direction, so they would all travel at the same velocity, realtively speaking. But frequency and wavelength are quite different.

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Filed Under: Physics
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Q:

 The first step in database development is which of the following?

A) Enterprise data modeling B) Logical database design
C) Physical database design and definition D) Database Implementation
 
Answer & Explanation Answer: A) Enterprise data modeling

Explanation:
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Filed Under: Database

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Q:

Max well is the unit of

A) intensity of magnetization B) permeability
C) magnetic flux D) magnetic susceptibility
 
Answer & Explanation Answer: C) magnetic flux

Explanation:
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Filed Under: Physics

2 4514
Q:

The electrical domestic tube light gives white fluorescent light because of

A) colision between molecules of filled gas under electric current B) heavy current
C) vacuum inside the tube D) falling of ultra violet rays on the white inner coating of the tube
 
Answer & Explanation Answer: D) falling of ultra violet rays on the white inner coating of the tube

Explanation:

The ultraviolet rays have high frequency and shorter wavelength are converted to visible white light with lower frequency and greater wave length

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Filed Under: Physics

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