# Electrical engineering-Network Theory Set/4 Sample Test,Sample questions

1.0.08 A

2. 0.16 A

3.0.32 A

4.0.64 A

1.1

2.5

3.10

4.15

1.0.0

2.-0.5

3. -1.0

4.-2.0

## Question: ```A 440 V, 50 HZ AC source supplies a series LCR circuit with a capacitor and a coil. If the coil has 100 mâ„¦ resistance and 15 mH inductance, then at a resonance frequency of 50 Hz, the half power frequencies of the circuit are? ```

1.50.53 Hz, 49.57 Hz

2.52.12 HZ, 49.8 Hz

3.55.02 Hz, 48.95 Hz

4.50 HZ, 49 Hz

1.82.63

2.47.115

3.27.38

4.92.38

1.676 Î¼F

2.575 Î¼F

3.591 Î¼F

4.610 Î¼F

1.8.04 V

2.7.96 V

3.5.68 V

4.1.25 V

1.2.5 mH

2.1.2 mH

3.0.5 mH

4. 0.1 mH

1.2.5 A

2.3.5 A

3.4.5 A

4.0.5 A

1.100.31 V

2.200.31 V

3.300.31 V

4.400.31 V

1.2.33 A

2.3.33 A

3.1.33 A

4.4.33 A

1.1.57 A

2. 1.87 A

3.1.67 A

4.2.83 A

1.2 â„¦

2.3 â„¦

3.5.5 â„¦

4.4.7 â„¦

## Question: ```A coil (which can be modelled as a series RL circuit) has been designed for a high Quality Factor (Q) performance. The voltage is rated at and a specified frequency. If the frequency of operation is increased 10 times and the coil is operated at the same rated voltage. The new value of Q factor and the active power P will be? ```

1.P is doubled and Q is halved

2.P is halved and Q is doubled

3.P remains constant and Q is doubled

4.P decreases 100 times and Q is increased 10 times

1.9%

2.12.4%

3.8.33%

4.7.87%

1.25

2.50

3.100

4.200

1.25.52

2.35.35

3. 45.45

4.20.02

1.275 Î¼J

2.250 Î¼J

3. 225 Î¼J

4.625 Î¼J

1.1000

2.2000

3.3000

4.4000

1.0.04

2.0.05

3.0.06

4.0.07

## Question: ```At resonant frequency, the voltage across capacitor is _______ the voltage across inductor. ```

1.greater than

2.less than

3.greater than or equal to

4.equal to

1.11.4 kHz

2.4.5 kHz

3.1.1 kHz

4.24.74 kHz

1.157

2.158

3.159

4.160

## Question: ```For a parallel RLC circuit, the incorrect statement among the following is _____________ ```

1.The bandwidth of the circuit decreases if R is increased

2.The bandwidth of the circuit remains same if L is increased

3.At resonance, input impedance is a real quantity

4.At resonance, the magnitude of input impedance attains its minimum value

1.25, 2

2.30, 5

3. 40, 10

4.50, 2

1.C

2. Ï‰RC

3. Ï‰C

4. 1/Ï‰RC

## Question: ```If in a circuit, if Q value is decreased then it will cause? ```

1.small bandwidth

2.no effect on bandwidth

3.first increases and then decreases

4.large bandwidth

## Question: ```If the value of Q of the circuit is high, then its effect on bandwidth is? ```

1.large bandwidth

2.small bandwidth

3.no effect on bandwidth

4.first increases and then decreases

1.B + (N+1)

2.B + (N-1)

3.B-(N+1)

4.B-(N-1)

1.N+1

2.N

3.N-1

4.N-2

## Question: ```In a series RLC circuit for lower frequency and for higher frequency, power factors are respectively ______________ ```

3.Independent of Frequency

4.Same in both cases

1.0

2.0.5

3.0.866

4.1.0

1.short, input

2.short, output

3.open, output

4.open, input

1.true

2.false

1.algebraic sum

2.vector sum

3.multiplication

4. subtraction

## Question: ```The condition for maximum current to be transferred to the load is? ```

1.Source resistance greater than or equal to load resistance

2.Source resistance equal to load resistance

3.Source resistance less than load resistance

4.Source resistance greater than load resistance

## Question: ```The condition for maximum power to be transferred to the load is? ```

1.Source resistance equal to load resistance

2.Source resistance greater than load resistance

3.Source resistance greater than or equal to load resistance

4.Source resistance less than load resistance

## Question: ```The condition for maximum voltage to be transferred to the load is? ```

1.Source resistance greater than load resistance

2. Source resistance less than load resistance

3.Source resistance equal to load resistance

4.Source resistance greater than or equal to load resistance

1.R/Ï€L

2.R/2Ï€L

3.R/4Ï€L

4.R/8Ï€L

1.1/RC

2.RC

3.1/R

4.1/C

1.1/(2âˆšLC)

2.1/âˆšLC

3.1/(Ï€âˆšLC)

4.1/(2Ï€âˆšLC)

1.1/(2Ï€âˆšLC)

2.1/(Ï€âˆšLC)

3.1/(2âˆšLC)

4.1/âˆšLC

1.1/(2Ï€âˆšC)

2.1/( 2Ï€âˆšL)

3.2Ï€âˆšLC

4.1/(2Ï€âˆšLC)

1.30.3 rpm

2.25.02 rpm

3.27.6 rpm

4.33.1 rpm

## Question: ```The quality factor is the product of 2Ï€ and the ratio of ______ to _________ ```

1.maximum energy stored, energy dissipated per cycle

2.energy dissipated per cycle, maximum energy stored

3.maximum energy stored per cycle, energy dissipated

4.energy dissipated, maximum energy stored per cycle

## Question: ```The simultaneous applications of signals x (t) and y (t) to the horizontal and vertical plates respectively, of an oscilloscope, produce a vertical figure of 8 displays. If P and Q are constants and x(t) = P sin (4t + 30), then y(t) is equal to _________ ```

1.Q sin (4t â€“ 30)

2.Q sin (2t + 15)

3.Q sin (8t + 60)

4.Q sin (4t + 30)

1.0

2.1

3.2

4.3

1.13.04 A

2.10 A

3.14.95 A

4.12.56 A

## Question: ```Theveninâ€™s voltage is equal to the _____________ voltage across the _______________ terminals. ```

1.short circuit, input

2.short circuit, output

3.open circuit, output

4.open circuit, input

## More MCQS

##### Olete Team
Online Exam TestTop Tutorials are Core Java,Hibernate ,Spring,Sturts.The content on Online Exam Testwebsite is done by expert team not only with the help of books but along with the strong professional knowledge in all context like coding,designing, marketing,etc!