EET308 Comprehensive Course Work Test 1

Name of the Student

Batch

• E1
• E2

Roll Number

• 1 A
• b. 2 A
• c. ½ A
• d. 0

2. In a series RL circuit, the voltage across the resistance is 40V and the voltage across inductance is 40V. Then the total voltage across the series circuit is

• a. 40V
• b. 56.56V
• c. 80V
• d. 5.656V

3. In RL series circuit R=2Ω and L=2mH. What is the value of time constant?

• a. 1 ms
• b. 1 s
• c. 4msec
• d. 100sec

4. Time constant is the time taken for response to rise -------of maximum value?

• a. 100%
• b. 90%
• c. 63.2%
• d. 68.3%

5. A 10 Ω resistor, a 1 H inductor and 1 µF capacitor are connected in parallel. The combination is driven by a unit step current. Under the steady state condition, the source current flows through.

• (a) the resistor
• (b) the inductor
• (c) the capacitor only
• (d) all the three elements

• a. 60 V and -0.3 A
• b. 150 V and zero
• c. Zero and 0.3 A
• d. 90 V and -0.3 A

7. In the circuit shown below, the initial charge on the capacitor is 2.5 mC, with the voltage polarity as indicated. The switch is closed at time t = 0. The current i(t) at a time t after the switch is closed is

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