Free Printable SELF ASSESSMENT (T2)

1.

Choose the correct combination terms and statement (condition) for the following voltage phasor diagram?

a)

Pre-dominantly capacitive circuit (XL < XC)

b)

Pre-dominantly inductive circuit (XL > XC)

c)

Series Resonance circuit (XL = XC)

d)

Parallel Resonance Circuit (XL = XC)

2.

Choose the correct combination terms and statement (condition) for the following voltage phasor diagram?

a)

Pre-dominantly capacitive circuit (XL < XC)

b)

Pre-dominantly inductive circuit (XL > XC)

c)

Series Resonance circuit (XL = XC)

d)

Parallel Resonance Circuit (XL = XC)

3.

Choose the correct combination terms and statement (condition) for the following voltage phasor diagram?

a)

Pre-dominantly capacitive circuit (XL < XC)

b)

Pre-dominantly inductive circuit (XL > XC)

c)

Series Resonance circuit (XL = XC)

d)

Parallel Resonance Circuit (XL = XC)

4.

Refer to parallel RL circuit, find resistor current, I_R flow through the circuit:
(Please remember the answer to be used in the next question)

a)

$89.3\angle\ 0\degree\ mA$

b)

$159.2\ \angle\ 0\degree\ mA$

c)

$15.92\ \angle\ 0\degree\ mA$

d)

$0.9\ \angle\ 0\degree\ mA$

5.

Refer to parallel RL circuit, find inductor current, I_L flow through the circuit:
(Please remember the answer to be used in the next question)

a)

$89.3\angle\ 90\degree\ mA$

b)

$159.2\ \angle\ -90\degree\ mA$

c)

$15.92\ \angle\ 90\degree\ mA$

d)

$0.9\ \angle\ 0\degree\ mA$

6.

Refer to parallel RL circuit, find total current, I_T flow through the circuit:

a)

$89.3\angle\ 60.7\degree\ mA$

b)

$159.2\ \angle\ 60\degree\ mA$

c)

$183\ \angle\ -60.7\degree\ mA$

d)

$0.089\ \angle\ 60\degree\ mA$

7.

A coil having a resistance of 10Ω and an inductance of 0.2H is connected to a 100 V, 50Hz supply is connected in series.
(Please remember the answer to be used in the next question)

a) Find the total impedance of the coil

a)

$10\ \angle\ 1.15\degree\ \Omega$

b)

$63.62\ \angle\ 8.93\degree\ \Omega$

c)

$10\ \angle\ 0\degree\ \Omega$

d)

$63.62\ \angle\ 80.93\degree\ \Omega$

8.

A coil having a resistance of 10Ω and an inductance of 0.2H is connected to a 100 V, 50Hz supply is connected in series.
(Please remember the answer to be used in the next question)

~~a) Find the total impedance of the coil~~
b) Find the total current for the coil

a)

$1.57\ \angle\ 80.9\degree\ A$

b)

$1.57\ \angle\ 80.9\degree\ mA$

c)

$1.57\ \angle\ -80.9\degree\ A$

d)

$1.57\ \angle\ -80.9\degree\ mA$

9.

A coil having a resistance of 10Ω and an inductance of 0.2H is connected to a 100 V, 50Hz supply is connected in series.

~~a) Find the total impedance of the coil~~
~~b) Find the total current for the coil~~
c) Find the Active Power, Reactive Power & Apparent Power

a)

P = 24.7 mW
Q = 155.26 mVAR
S = 157.2 mVA

b)

P = 24.7 W
Q = 155.26 VAR
S = 157.2 VA

c)

P = 24.7 W
Q = 155.26 VAR
S = 179.96 VA

d)

P = 24.7 mW
Q = 155.26 mVAR
S = 179.96 mVA

10.

Determine the current total, I_T of the series RLC circuit above:
(Please remember the answer to be used in the next question)

a)

$61.5\ \angle\ -43.7\degree\ A$

b)

$615\ \angle\ -43.7\degree\ \mu A$

c)

$61.5\ \angle\ -43.7\degree\ mA$

d)

$0.615\ \angle\ -43.7\degree\ A$

11.

Determine the voltage across each element of the series RLC circuit above:
(Please remember the answer to be used in the next question)

a)

$Vr\ =\ 2.89\ \angle\ -43.7\degree\ V$
$VL\ =4.92\ \angle\ 46.3\degree\ V$
$VC=\ 2.15\ \angle\ -133.7\degree\ V$

b)

$Vr\ =\ 2.89\ \angle\ 43.7\degree\ V$
$VL\ =\ 4.9\ \angle\ -46.3\degree\ V$ $VC\ =\ 2.15\ \angle\ -133.7\degree\ V$

c)

$VR\ =\ 4.92\ \angle\ 46.3\degree\ V$
$VL=\ 2.89\ \angle\ -43.7\degree\ V$
$VC\ =\ 2.19\ \angle\ 133.7\degree\ V$

d)

$VR\ =\ 2.19\ \angle\ 133.7\degree\ V$ $VL\ =\ 4.92\ \angle\ 46.3\degree\ V$
$VC\ =\ 2.15\ \angle\ 43.7\degree\ V$

12.

From your previous answers, in your opinion, is this circuit predominantly inductive or capacitive?

a)

Pre-dominantly Capacitive circuit

b)

Pre-dominantly Inductive circuit

SELF ASSESSMENT (T2)

Total questions: 12

Worksheet time: 20mins

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