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Q:

What device converts light energy to electrical energy?

A) Photodiode B) Photovoltaic cell
C) Thermocouple D) Heliostats
 
Answer & Explanation Answer: B) Photovoltaic cell

Explanation:

what_device_converts_light_energy_to_electrical_energy1555397376.png image

 

A device which is used to convert light energy directly into electrical energy is called as photovoltaic cell or a solar cell.

 

Heliostats convert light energy into heat energy.

 

A thermocouple is a device for measuring temperature.

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

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Q:

Who is also known as the founder of scientific socialism ?

A) Karl Marx B) Lenin
C) Rousseau D) Engels
 
Answer & Explanation Answer: A) Karl Marx

Explanation:
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Filed Under: World History

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Q:

What was the topic of the book 'The Other America'?

A) Poverty was widespread in America. B) Education was lacking in America.
C) Racism was widespread in America. D) Americans needed more highways.
 
Answer & Explanation Answer: A) Poverty was widespread in America.

Explanation:

The book "The Other America" was written by Michael Harrington. The topic of the book 'The Other America' was Poverty was widespread in America.

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Filed Under: Books and Authors
Exam Prep: AIEEE , Bank Exams , CAT , GRE
Job Role: Analyst , Bank Clerk , Bank PO

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Q:

You have started your own company based upon PMI methodologies and have been contracted by the government to develope a new interface for one of its computer applications. You develope a solution and win the bid for the contract but encounter problems at the end of the project when the customer says that you did not fullfill their needs. You are throughly shocked. What is your conclusion of the situation?

A) There are always more customers available B) If the customer is not satisfied, the project is not successful
C) Change control management was not effective D) The customer did not communicate very well
 
Answer & Explanation Answer: B) If the customer is not satisfied, the project is not successful

Explanation:

Answer A is incorrect because without satisfied customers, we do not have potential for new projects. Answer C is incorrect because the change control management process would have likely resolved this problem. Answer D is incorrect because it is the project manager's responsibility to seek communication with the customer to set realistic expectations.

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Filed Under: PMP Certification

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Q:

A column defined as UNIQUE can contain Nulls while a column defined as PRIMARY KEY can't contain Nulls

A) TRUE B) FALSE
Answer & Explanation Answer: A) TRUE

Explanation:

Because a table can have only one primary key

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Subject: Oracle Certification
Job Role: Database Administration

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Q:

Which of the following is the mixture

A) distilled water B) gasoline
C) liquified petroleum gas D) both (b) & (c)
 
Answer & Explanation Answer: D) both (b) & (c)

Explanation:
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Filed Under: Chemistry

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Q:

Two boxes contain 4 and 16 balls respectively. Two balls in the first box and four in the second, are black. If a box is chosen randomly and two balls are drawn at random from it, what is the
probability that at least one ball is black if the ball is not replaced?

A) 11/20 B) 43/120
C) 77/120 D) 9/20
 
Answer & Explanation Answer: C) 77/120

Explanation:

At least one black can be chosen in two ways from each box:
Now, probability of choosing at least one black ball from first box 

= 1/2 × [ (2C1× 2C1)/4C2 + 2C2/ 4C2 ]= 5/12

Probability of choosing at least one black ball from 2nd box
= 1/2 × [(4C1×12C1)/16C2 + 4C2/ 16C2] = 9/40

Final probability

= 5/12 + 9/40 = (50 + 27)/120 = 77/120

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Filed Under: Quantitative Aptitude - Arithmetic Ability
Exam Prep: Bank Exams , GATE

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Q:

With which Bank Google has tied up for its mobile payments app Tez?

A) SBI Bank B) Axis Bank
C) HDFC Bank D) PNB Bank
 
Answer & Explanation Answer: A) SBI Bank

Explanation:

Internet giant Google has tied up with State Bank of India (SBI) for its mobile payments app Tez. Through this partnership, Google Tez will allow users to create an SBI UPI Id - @oksbi and get access.

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Filed Under: General Awareness
Exam Prep: AIEEE , Bank Exams , CAT
Job Role: Analyst , Bank Clerk , Bank PO

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