Electrical engineering-Network Theory MCQs Set/7 Sample Test,Sample questions

Question: ``` For making a capacitor, the dielectric should have __________ ```

1.High relative permittivity

2.Low relative permittivity

3.Relative permittivity = 1

4.Relative permittivity neither too high nor too low

1.20.0 â„¦

2.22.22 â„¦

3. 25.0 â„¦

4.50.0 â„¦

Question: ```A capacitor, used for power factor correction in a single phase circuit decreases which of the following? ```

1.Power factor

2.Line current

3.Both Line current and Power factor

4.Neither Line current nor Power factor

1.s

2. s+3

3.s+1

4.s+2

1.s

2.s+1

3.s+2

4.s+3

1.s+1

2.s

3.s+3

4.s+2

1.s+3

2.s+2

3.s+1

4.s

Question: ```A filter that passes all frequencies lying outside a certain range, while it attenuates all frequencies between the two designated frequencies is called? ```

1.low pass filter

2.high pass filter

3.band elimination filter

4.band pass filter

Question: ```A filter that passes frequencies between two designated cut-off frequencies and attenuates all other frequencies is called? ```

1.high pass filter

2.band elimination filter

3.band pass filter

4.low pass filter

1.2.46 kHz

2.1.23 kHz

3.0.615 kHz

4.3.69 kHz

1.24.6 kHz

2.50 kHz

3. 61.5 kHz

4.36.9 kHz

1.9%

2.12.04%

3.8.67%

4. 6.67%

1.1000 Hz

2.2000 Hz

3.1025 Hz

4.500 Hz

Question: ```A thermistor is used for ____________ ```

1.Over voltage protection

2.Temperature alarm circuit

3.Automatic light control

4.Automatic sensor

1.3.33%

2.6.67%

3.13.34%

4.13.67%

Question: ```An inverse network may be obtained by? ```

1.Converting each series branch into another series branch

2.Converting each series branch into another parallel branch

3.Converting each parallel branch into another series branch

4.None of the mentioned

1.1

2.2

3.3

4.4

1.30 V

2.60 V

3.120 V

4. 240 V

1.2

2.3

3.4

4.6

1.10

2.8

3.4

4.6

Question: ```For providing a Roll-off greater than 20dB/decade/pole, filters with which characteristics are useful? ```

1.Butterworth

2.Chebyshev

3.Bessel

4.Butterworth & Bessel

Question: ```For providing a Roll-off greater than 60dB/decade/pole, filters with which characteristics are useful? ```

1.Butterworth

2.Chebyshev

3.Bessel

4.Butterworth & Bessel

Question: ```For the complex zeros to appear in conjugate pairs the poles of the network function are ____ and zeros of the network function are ____________ ```

1.complex, complex

2.complex, real

3. real, real

4.real, complex

1.400

2.1000

3.1100

4. 2100

1.0.216

2.0.316

3. 0.416

4. 0.516

Question: ```If the polynomial P (s) is either even or odd, then the roots of P (s) lie on __________ ```

1.on Ïƒ axis

2.on jÏ‰ axis

3.left half of s-plane

4.right half of s plane

Question: ```If the ratio of the polynomial P (s) and its derivative gives a continued fraction expansion with ________ coefficients, then the polynomial P (s) is Hurwitz. ```

1.all negative

2.all positive

3.positive or negative

4. positive and negative

1.15.5 A

2.25.05 A

3.18.03 A

4. 30.15 A

Question: ```In a parallel RL circuit, 12 A current enters into the resistor R and 16 A current enters into the Inductor L. The total current I the sinusoidal source is ___________ ```

1.25 A

2.4 A

3.20 A

4.Cannot be determined

1.Low-pass

2.High-pass

3.Band-pass

4. Band-stop

1.True

2.False

Question: ```The bridged-T phase equalizer consists of? ```

1.Only pure inductors

2.Only pure capacitors

3.Only pure resistors

4. Only pure reactance

1.Resistance

2.Inductance

3.Capacitance

4.Semi-conductor

Question: ```The denominator polynomial in a transfer function may not have any missing terms between the highest and the lowest degree, unless? ```

1.all odd terms are missing

2. all even terms are missing

3.all even or odd terms are missing

4.all even and odd terms are missing

Question: ```The input to output power ratio of the load (N) is the ratio of the________ to the __________ ```

1.Maximum power delivered to the load when the equalizer is not present, power delivered to the load when equalizer is present

2.Power delivered to the load when equalizer is present, maximum power delivered to the load when the equalizer is not present

3.Maximum power delivered to the load when the equalizer is present, power delivered to the load when equalizer is not present

4.Power delivered to the load when equalizer is not present, maximum power delivered to the load when the equalizer is present

Question: ```The N is defined as? ```

1.output power/ input power

2.input power/ output power

3.output power at inductor/ input power

4.output power at capacitor/ input power

Question: ```The poles and zeros of driving point impedance function and driving point admittance function lie on? ```

1.left half of s-plane only

2.right half of s-plane only

3.left half of s-plane or on imaginary axis

4.right half of s-plane or on imaginary axis

1.True

2.False

Question: ```The real parts of the driving point function Z (s) and Y (s) are? ```

1.positive and zero

2.positive

3.zero

4.positive or zero

1.Î± = Ï’ + jÎ²

2.Ï’ = Î± + jÎ²

3.Î² = Ï’ + jÎ±

4. Î± = Î² + jÏ’

1.temperature

2. circuit

3. light control

4.sensors

Question: ```The roots of the odd and even parts of a Hurwitz polynomial P (s) lie on ____________ ```

1.right half of s plane

2.left half of s-plane

3.on jÏ‰ axis

4. on Ïƒ axis

1.Ï€

2.Ï€/4

3.Ï€/2

4.0

1.0

2.Ï€

3. Ï€/2

4. Ï€/4

Question: ```The value of N in dB is? ```

1.N = anti log(dB)

2.N = anti log(dB/10)

3.N = anti log(dB/20)

4.N = anti log(dB/40)

1.antilog(D)

2.antilog(D/10)

3. antilog(D/20)

4.antilog(D/40)

1.0.115 N

2.0.125 N

3.0.135 N

4.0.145 N

Question: ```Two capacitors of 0.5 Î¼F and 1.5 Î¼F capacitance are connected in parallel across a 110 V dc battery. The charges across the two capacitors after getting charged is ___________ ```

1.55 Î¼C each

2.275 Î¼C each

3.55 Î¼C and 275 Î¼C respectively

4.275 Î¼C and 55 Î¼C respectively

Question: ```When a lead acid battery is being charged, the specific gravity of the electrolyte will ___________ ```

1.Decrease

2.Increase

3.Either Increase or Decrease

4.Neither Increase nor Decrease

Question: ```When s is real, the driving point impedance function is _________ function and the driving point admittance function is _________ function. ```

1.real, complex

2.real, real

3.complex, real

4.complex, complex

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