Free NNPC Past Question And Answers

Free NNPC Past Question And Answers is open for all Candidate in preparation for the forth coming exams. As a matter of facts, the Nigerian National Petroleum Corporation (NNPC) has opened their portal for massive recruitment. In like manner, millions of persons has applied for one position or the other. Intuitively, everyone wants to be employed. Success comes to the prepared. This article is free to help you succeed. NNPC Past Question And Answers

As a matter of facts, the NNPC Past Question And Answers covers all that you need to succeed. Likewise, the attitude test covers mathematics, English and general paper. You are to study in line of this topics.

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Samples of NNPC Past Question And Answers

• Last year Jose sold a painting for \$2000. If he made 25% profit on the sale, how much had he paid for the painting?
1. \$1200
2. \$1500
3. \$1600
4. \$2400
5. \$2500

Jose made 25% profit, so if he bought the painting for x, he sold it for: x + 0.25x = 1.25x = 2000  ⇒x = 2000 ÷ 1.25 = 1600. The answer is (C).

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• In the figure below what is the value of b?
1. 30
2. 36
3. 45
4. 60
5. 72

Since vertical angles have the same measure, c = d, d = a, and b = a – b a = 2b. Therefore, c = d = a = 2b. Also, the sum of the measures of all six angles is 3600, so a + b + c + d + a – b + d = 2a + c + 2d = 360. Replacing c, d, and a by 2b yields 10b = 360  ⇒b =36. The answer is (B).

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• A lacrosse team raised some money. The members used 74% of the money to buy uniform, 18% for equipment, and the remaining \$216 for a team party. How much money did they raise?
1. 2400
2. 2450
3. 2500
4. 2600
5. 2700

SINCE 74% + 18% = 92%, THE \$216 spent on the party presents the other 8 % 0f the money raised. Then: 0.08m = 216  ⇒ m = 216 ÷ 0.08 = 2700. The answer is (E).

• In the figure below, what is the sum of the degree measures of all of the marked angles?
1. 600
2. 620
3. 700
4. 720
5. 750
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Each of the 10 marked angles is an exterior angle of the pentagon. If you take one angle at each vertex, the sum of the degree measures of those five angles is 360; the sum of the degree measures of the other five also is 360: 360 + 360 = 720.

The answer is (720).

• Energy is equal to power multiplied by voltage.
1. True
2. False

Explanation:

Energy = Power*Time (not multiply by voltage).

Firstly, P = VI.

P = (V^2)/R.

Finally, P = (I^2)*R.

• The capacity of a battery is measured in milliamperes.
1. True
2. False

Explanation:

Battery capacity is measured in ampere-hours (amp-hours)

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1. True
2. False

1. True
2. False

• If you used 400 W of power for 30 h, you have used
1. 1.3 kWh
2. 13.3 kWh
3. 1.2 kWh
4. 12 kWh

Explanation:

The power is multiplied by time then the energy is:

E = P*T.

E = 400*30 = 12*10^3.

= 12KWH.

• A power supply produces a 0.6 W output with an input of 0.7 W. Its percentage of efficiency is
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1. 57%
2. 42.85%
3. 4.28%
4. 85.7%

Explanation:

Efficiency=output/input

=. 6\.7

=. 857

% efficiency =. 857*100

= 85.7%

• A certain appliance uses 350 W. If it is allowed to run continuously for 24 days, how many kilowatt-hours of energy does it consume?

1. 20.16 kWh
2. 201.6 kWh
3. 2.01 kWh
4. 8.4 kWh

Explanation:

Kwh = (350*24*24)/1000 = 201.6kWh

1. 60 V
2. 660 V
3. 30 V
4. 300 V