Questions

Q:

Who Invented Modern Frequency Modulation FM Radio ?

A) Peter Durand B) Percy Shaw
C) Edwin H. Armstrong D) Leo Hendrik Baekeland
 
Answer & Explanation Answer: C) Edwin H. Armstrong

Explanation:
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Filed Under: Inventions

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Q:

Amoeba belongs to the phylum

A) Protozoa B) Annelida
C) Porifera D) Platyhelminthes
 
Answer & Explanation Answer: A) Protozoa

Explanation:
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Filed Under: Biology

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Q:

ATP generally energizes a cellular process by

A) direct chemical transfer of a phosphate group B) becoming oxidized
C) releasing heat upon hydrolysis D) direct chemical transfer of a sugar group
 
Answer & Explanation Answer: A) direct chemical transfer of a phosphate group

Explanation:

ATP generally energizes a cellular process by direct chemical transfer of a phosphate group.

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Filed Under: Chemistry
Exam Prep: AIEEE , Bank Exams , CAT , GATE
Job Role: Analyst , Bank Clerk , Bank PO

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Q:

In the context of memory management, what are placement and replacement algorithms?

Answer

Placement algorithms determine where in available real-memory to load a program. Common methods are first-fit, next-fit, best-fit. Replacement algorithms are used when memory is full, and one process (or part of a process) needs to be swapped out to accommodate a new program. The replacement algorithm determines which are the partitions to be swapped out.

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Q:

Which sources produce alternating current (AC)?

A) Solar power plants B) Hydro-electric generators
C) Batteries D) All of the above
 
Answer & Explanation Answer: B) Hydro-electric generators

Explanation:

Alternating Current (AC) is the current in which flow of current is altered periodically whereas in DC current i.e, direct current the flow of current is only in one direction.

Some of the sources of AC current are :

1. Hydro-electric generators

2. Thermal power generators

3. Nuclear  power generators...

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Filed Under: Physics
Exam Prep: AIEEE , Bank Exams , CAT
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Q:

Point out which from the following is NOT a right enumerated in the Constitution of India but has been articulated by the Supreme Court to be a Fundamental Right

A) Right to privacy B) Certiorari
C) Abolition of untouchability D) Right to form association or Union
 
Answer & Explanation Answer: A) Right to privacy

Explanation:
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Filed Under: Indian Politics

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Q:

Who is author of the book 'Preparing for the Twenty First Century '

A) V.S.Naipaul B) John Ruskin
C) Paul Kennedy D) Henry Kissinger
 
Answer & Explanation Answer: C) Paul Kennedy

Explanation:
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Filed Under: Books and Authors

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Q:

Give two ways of converting a two input NAND gate to an inverter.

Answer

One way is shorting the two inputs of the NAND gate and passing the input.


truth table:


A B output


1 1 0


0 0 1


The second way is passing the input to only one input (say A) of the NAND gate. Since the other input  (say B is floating, it is always logic one.


Truth table:


A B output


1 1 0 


0 1 1

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Subject: Hardware

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