Ξ Engineering » Electrical » Important Numerical

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Q1. | Three inductances are
connected as shown in Fig. What is
the equivalent inductance? | ||||||

A. | 0.9 H |
B. | 0.7 H |
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C. | 0.6 H |
D. | 0.5 H |
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Q2. | There pure inductances
are connected as shown in Fig. What
equivalent inductance L_{eq} may replace this
circuit? | |||||||||||||||||||

A. | 0.3 H |
B. | 0.1 H |
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C. | 0.4 H |
D. | 0.2 H |
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Q3. | If 70 J of energy is available for every 30 C of charge, what is the voltage? | ||||||

A. | 3.33 V |
B. | 2.33 V |
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C. | 4.33 V |
D. | 5.33 V |
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Q4. | A resistor with a current of 3 A through it converts 500 J of electrical energy to heat energy in 12 s. What is the voltage across the resistor? | ||||||

A. | 13.84 |
B. | 16.88 |
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C. | 16.84 |
D. | 13.88 |
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Q5. | Five coulombs of charge flow past a given point in a wire in 2 s.How many amperes of current is flowing? | ||||||

A. | 25A |
B. | .25A |
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C. | 2.5A |
D. | 2A |
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Q6. | What is the power in watts if energy equal to 50 J is used in 2.5 s? | ||||||

A. | 30W |
B. | 20W |
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C. | 40W |
D. | 50W |
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Q7. | A 5 Î© resistor has a voltage rating of 100 V. What is its power rating? | ||||||

A. | 4kW |
B. | 6kW |
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C. | 2kW |
D. | 8kW |
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Q8. | A 10 Î© resistor is connected across a 12 V battery. How much current flows through the resistor? | ||||||

A. | 1.2A |
B. | 2.2A |
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C. | .12A |
D. | 12A |
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Q9. | The current in a 2 H inductor varies at a rate of 2 A/s. Find the voltage across the inductor and the energy stored in the magnetic field after 2 s. | |||||||||||||

A. | 9 V, 18 J |
B. | 9 V, 17 J |
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C. | 8 V, 19 J |
D. | 8 V, 16 J |
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Q10. | Find the inductance of a coil through which flows a current of 0.2A with an energy of 0.15 J. | |||||||||||||||||

A. | 7.6 H |
B. | 7.5 H |
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C. | 6.5 H |
D. | 6.6 H |
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