# Electrical engineering-Network Theory Set/5 Sample Test,Sample questions

## Question: ``` In the expression of current in the R-L circuit the transient part is? ```

1.R/V

2.(V/R)(-expâ¡((R/L)t))

3.(V/R)(expâ¡((R/L)t))

4.V/R

1.10.56

2. -28.57

3.11.80

4.-11.80

1.10955.67 VAR

2.10.95567 VAR

3.109.5567 VAR

4.1.095567 VAR

1.7.26W

2.726W

3.7260W

4.72.6W

1.10 kHz

2.100 kHz

3.10 Hz

4.100 Hz

## Question: ```A coil is designed for high Q performance at a rated voltage and a specified frequency. If the frequency is made twice the original and the coil is operated at the same rated voltage, then the active power P will be affected as ____________ ```

1.P is halved

2.P remains unchanged

3.P is doubled

4.P decreases 4 times

## Question: ```A coil is designed for high Q performance at a rated voltage and a specified frequency. If the frequency is made twice the original and the coil is operated at the same rated voltage, then the Q factor will be affected as ____________ ```

1.Q is halved

2.Q remains unchanged

3.Q is doubled

4.Q increases or decreases but magnitude cannot be measured

## Question: ```A current of [2 + 2â€“âˆšsin (314t + 30) + 22â€“âˆšcos (952t +45)] is measured with a thermocouple type, 5A full scale, class 1 meter. The meter reading would lie in the range? ```

1.5 A Â± 1 %

2. (2 + 32â€“âˆš) A Â± 1%

3.3 A Â± 1.7 %

4.2 A Â± 2.5 %

1.0.6

2.0.8

3.1

4.1.2

1.2

2.3

3. 4

4.5

1.21

2. 22

3.23

4.24

1.2

2.4

3.6

4.8

## Question: ```If the roots of an equation are complex conjugate, then the response will be? ```

1.over damped

2.critically damped

3.damped

4.under damped

## Question: ```If the roots of an equation are real and equal, then the response will be? ```

1.over damped

2.damped

3.critically damped

4.under damped

## Question: ```If the roots of an equation are real and unequal, then the response will be? ```

1.critically damped

2.under damped

3.over damped

4.damped

1.1

2. 2

3.3

4.zero

## Question: ```In a delta-connected load, the relation between line voltage and the phase voltage is? ```

1.line voltage > phase voltage

2. line voltage < phase voltage

3.line voltage = phase voltage

4.line voltage >= phase voltage

1.1

2.2

3.3

4.4

## Question: ```In an R-C circuit, when the switch is closed, the response ____________ ```

1.do not vary with time

2.decays with time

3.rises with time

4.first increases and then decreases

1.1

2.2

3. 3

4.0

1.0

2.1

3.2

4.3

1.30

2.60

3.90

4.120

## Question: ```In wye or star connection _____________ of the three phases are joined together within the alternator. ```

1.similar ends

2.opposite ends

3.one similar end, two opposite ends

4.one opposite end, two opposite ends

## Question: ```Laplace transform changes the ____ domain function to the _____ domain function. ```

1.time, time

2.time, frequency

3.frequency, time

4.frequency, frequency

## Question: ```Phase sequence depends on the _________________ ```

1.field

2.rotation of the field

3.armature

4.rotation of the armature

## Question: ```The CT supplies current to the current coil of a wattmeter power factor meter, energy meter and, an ammeter. These are connected as? ```

1.All coils in parallel

2.All coils in series

3.Series-parallel connection with two in each arm

4.Series-parallel connection with one in each arm

## Question: ```The expression of current in R-C circuit is? ```

1.i=(V/R)expâ¡(t/RC)

2.i=(V/R)expâ¡(-t/RC)

3.i=(V/R)-exp(â¡t/RC)

4.i=(V/R)-expâ¡(-t/RC)

## Question: ```The expression of current in R-L circuit is? ```

1.i=(V/R)(1+expâ¡((R/L)t))

2.i=-(V/R)(1-expâ¡((R/L)t))

3.i=-(V/R)(1+expâ¡((R/L)t))

4.i=(V/R)(1-expâ¡((R/L)t))

1.10 kâ„¦

2.100 kâ„¦

3.250 kâ„¦

4.20 kâ„¦

1.7.165

2.6.165

3.6.165

4.4.165

1.1.835

2.2.835

3.3.835

4.4.835

1.50

2.100

3.150

4.200

1.40.4

2.41.4

3.42.4

4. 43.4

1.5

2.50

3.500

4. 5000

1.0.25

2.0.5

3.0.75

4.1

## Question: ```The relation between the Q factor of a coil measured by the Q Meter and the actual Q of the coil is _________ ```

1.Equal to

2.Same but somewhat lesser than

3.Same but somewhat higher than

4.Not equal to

## Question: ```The steady state part in the expression of current in the R-L circuit is? ```

1.(V/R)(expâ¡((R/L)t))

2.(V/R)(-expâ¡((R/L)t))

3.V/R

4.R/V

1.RC

2.R/C

3.R

4.C

1.0

2.1

3.2

4.3

1.L/R

2.R/L

3.R

4.L

## Question: ```The voltage between __________ and ___________ is called phase voltage. ```

1.line and line

2.line and reference

3. neutral point and reference

4.line and neutral point

## Question: ```The voltage between ______________ is called line voltage. ```

1.line and neutral point

2. line and reference

3.line and line

4.neutral point and reference

1.360

2.365

3. 370

4.375

1.0.43

2.0.53

3.0.63

4.0.73

1.751.44

2.752.44

3.753.44

4.754.44

1.14 mH

2.5.85 mH

3.6 mH

4.6.15 mH

1.Â±10 â„¦

2.Â±10.6 â„¦

3.Â±15.8 â„¦

4.Â±20 â„¦

1.0

2.1

3.2

4.3

1.2 mH

2.5 mH

3.4 mH

4.6 mH

1.single phase

2.two phase

3. three phase

4.four phase

## More MCQS

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