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PLACEMENT PAPER FOR NTPC.(NATIONAL THERMAL POWER CORPORATION).
We know that NTPC being a government aided organization, its recruitment is done through GATE examination. This paper consist of three parts:-
a) ENGLISH.
b) APTITUDE.
c) TECHNICAL.
GENERAL APTITUDE QUESTIONS:-
| 1. | The expression (11.98 x 11.98 + 11.98 x x + 0.02 x 0.02) will be a perfect square for x equal to: |
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| 2. | Simple interest on a certain sum of money for 3 years at 8% per annum is half the compound interest on Rs. 4000 for 2 years at 10% per annum. The sum placed on simple interest is: |
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| 3 A boat running downstream covers a distance of 16 km in 2 hours while for covering the same distance upstream, it takes 4 hours. What is the speed of the boat in still water? |
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| 4. | A large tanker can be filled by two pipes A and B in 60 minutes and 40 minutes respectively. How many minutes will it take to fill the tanker from empty state if B is used for half the time and A and B fill it together for the other half? |
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| 5. | Out of 7 consonants and 4 vowels, how many words of 3 consonants and 2 vowels can be formed? |
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TECHNICAL QUESTIONS:-
| 1. | Free electrons make current possible. |
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| 2. | If 750 µA is flowing through 11 k of resistance, what is the voltage drop across the resistor? |
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| 3. | At the end of a 14 day period, your utility bill shows that you have used 18 kWh. What is your average daily power? |
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| 4. | A half-watt is equal to how many milliwatts? |
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| 5. | Series aiding is a term sometimes used to describe voltage sources of the same polarity in series. |
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| 6. | If there are a total of 120 mA into a parallel circuit consisting of three branches, and two of the branch currents are 40 mA and 10 mA, the third branch current is |
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| 7. | In a parallel circuit, the branch with the lowest resistance has the most current. |
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| 8. | What is the Thevenin equivalent (VTH and RTH) for the circuit given? |
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| 9. | What is the current through R2? |
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| 10. | Find branch current IR2. |
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| 11. | Third-order determinants are evaluated by the expansion method or by the cofactor method. |
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| 12. | A 2 F, a 4 F, and a 10 F capacitor are connected in series. The total capacitance is less than |
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| 13. | Five time constants are required for a capacitor to charge fully or discharge fully. |
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| 14. | In an RL circuit, the impedance is determined by both the resistance and the inductive reactance combined. |
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| 15. | A 10 resistor, a 90 mH coil, and a 0.015 F capacitor are in series across an ac source. The impedance magnitude at 1,200 Hz below fr is |
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| 16. | A certain series RLC circuit with a 200 Hz, 15 V ac source has the following values: R = 12 , C = 80 F, and L = 10 mH. The total impedance, expressed in polar form, is |
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| 17. | Referring to Problem 18, what is the bandwidth of the filter? |
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| 18. | In an RC differentiator, the sum of the capacitor voltage and the resistor voltage at any instant |
| A. | | | B. | | must be equal to the applied voltage |
| | C. | | is less than the applied voltage but greater than zero |
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| 19. | If the RC time constant of an integrator is increased, as the time constant is increased |
| A. | | the capacitor charges more during a pulse and discharges less between pulses |
| | B. | | the capacitor charges less during a pulse and discharges more between pulses |
| | C. | | the capacitor charges more during a pulse and discharges more between pulses |
| | D. | | the capacitor charges less during a pulse and discharges less between pulses |
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| 20. | In an RL integrating circuit, the output voltage is taken across the inductor. |
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TECNIAL QUESTIONS
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