Users Also Read

MCQ's Search Engine

Electrical Engineering

Mechanical Engineering

Civil Engineering

Automobile Engineering

Chemical Engineering

Computer Engineering

Electronics Engineering

Medical Science Engg

Q1. | A network has two branches in parallel. One branch contains impedance Z_{1} and the other branch has impedance Z_{2}. If it is fed from an ac voltage V of frequency f, the current through Z_{1} depends, on |

A. | V, Z_{1}, Z_{2} [Wrong Answer] |

B. | V, Z_{1} [Wrong Answer] |

C. | Z_{1}, Z_{2} [Wrong Answer] |

D. | V, Z_{1}, f [Correct Answer] |

View Answer
Explanation:-
Answer : DDiscuss it below :!! OOPS Login [Click here] is required to post your answer/resultHelp other students, write article, leave your comments |

**Also Read Similar Questions Below :**

⇒ A short vertical grounded antenna is required to radiate at 1 MHz. The effective height of the antenna is 302 m. The calculated value of radiation resistance is

1.58 Ω

158 Ω

15.8 Ω

none

⇒ 1111 + 11111 =

101111

101110

111111

11111

⇒ Find E at P(1, 1, 1) caused by four identical 3

*n*C point charges located at P

_{1}(1, 1, 0), P

_{2}(- 1, 1, 0), P

_{3}(- 1, - 1, 0) P

_{4}(1, - 1, 0)

21.58

*a*

*+ 21.58*

_{x}*a*

*+ 12*

_{y}*a*

*V/m*

_{z}6.82

*a*

*+ 6.82*

_{x}*a*

*+ 32.89*

_{y}*a*

*V/m*

_{z}-6.82

*a*- 6.82

_{x}*a*- 32.89

_{y}*a*V/m

_{z}-21.58

*a*- 21.58

_{x}*a*- 12

_{y}*az*V/m

⇒ The decimal equivalent of ABC

_{16}is

348

2583

2748

33

⇒ A T.V. station works at 300 MHz and radiates 100 kW of power. This signal received at a distance of 200 km will be

a few μV/m due to attenuation by atmosphere

1-5 mV due to ionospheric reflection

nil since propagation is line of sight

nil because signal fades completely at 300 MHz

⇒ The range of a cordless telephone is about

1000 m

500 m

100 m

10 m

⇒

**Assertion (A):** In an intrinsic semiconductor J = (μ_{n} x μ_{p})*en*_{i}.

**Reason (R):** Intrinsic charge concentration *n*_{i} at temperature T is given by *n*_{i}^{2} = A_{0} T^{3} *e*^{-EG0/kT}.

Both A and R are true and R is correct explanation of A

Both A and R are true but R is not correct explanation of A

A is true but R is false

A is false but R is true

⇒ The total inductance of two coils is 60 mH in series aiding connection and 40 mH in series opposing connection. The mutual inductance between coils is

20 mH

10 mH

5 mH

2.5 mH

⇒ An end fire array consisting of several half-wave lengths of directive gain 40, then find the width of major lobe

60

50

51.25

None of the above

⇒ Choose the correct statement

The reflection coefficient (r) of a transmission line is greater than 1

r varies from 0 to ∞

r is less than or equal to 1

r varies from - ∞ to + ∞

⇒ Multiplexer can be used as logic function generator.

TRUE

FALSE

⇒ An integrating amplifier has resistance in feedback path.

TRUE

FALSE

⇒ For underdamped second order systems the rise time is the time required for the response to rise from

0% to 100% of its final value

10% to 90% of its final value

5% to 95% of its final value

either (a) or (b)

⇒ Ferrite have

low copper loss

low eddy current loss

low resistivity

higher specific gravity compared to iron

⇒ In an RC impedance function

the highest critical frequency is a pole

the highest critical frequency is a zero

the highest critical frequency is a pole or zero

the highest critical frequency is a pole at

*s*= 0

⇒ If a common emitter amplifier with an emitter resistance R

_{C}has an overall transconductance gain of 1 m A/V, a voltage gain of - 4 and desensitivity of 50, then the value of the emitter resistance R would be

50 kΩ

0.98 kΩ

50 Ω

0.98 Ω

⇒ Which of these has poor overload capacity?

PMMC instrument

Hot wire instrument

Dynamometer instrument

Both (a) and (c)

⇒ In an oscillator crystal, the parallel resonant frequency is

equal to

higher than

less than

series resonant frequency

⇒ For a second order system delay time

*t*is the time required to reach

_{d}half the final value for the very first time

the final value for the very first time

90% of the final value for the very first time

none of the above

⇒ Which of the following be true for a CE transistor amplifier if the emitter resistor value is made equal to zero?

- Its gain will increase
- Its stability will increase
- Its gain will decrease
- Its stability will decrease

1 and 2

2 and 3

3 and 4

1 and 4

⇒ The autocorrelation function of the white noise is

impulse function

step function

constant

none of the above

⇒ Full duplex operation-permits transmission in both directions at the same time.

TRUE

FALSE

⇒ The reading of the voltmeter V in figure should be __________ v

60

10

66

0

⇒

Match the following:

List I (Characteristics) | List II (Decrease) | ||
---|---|---|---|

A. | Paramagnetic | 1. | All dipoles are aligned is one preferred direction |

B. | Ferromagnetic | 2. | Half the dipoles are aligned in opposite direction and have equal magnitude |

C. | Antiferromagnetic | 3. | Half the dipoles (with equal magnitudes) are aligned in opposite direction to the other half having equal but lower magnitude |

D. | Ferrimagnetic | 4. | All dipoles have equal magnitude but are randomly oriented |

A-4, B-3, C-2, D-1

A-4, B-1, C-2, D-3

A-2, B-1, C-4, D-3

A-2, B-3, C-4, D-1

⇒ The highest modulation frequencies typically used in FM broadcast is

5 kHz

10 kHz

15 kHz

25 kHz

⇒ In the case of an amplifier, the normalised voltage gain is given

*f*

_{P}>>

*f*

_{0}

*f*

_{P}=

*f*

_{0}

*f*

_{P}<<

*f*

_{0}

*f*

_{0}= 2

*f*

_{P}

⇒ Which op-amp circuit uses a resistance in series with input and capacitor in feedback path?

Differentiating amplifier

Integrating amplifier

Logarithmic amplifier

Exponential amplifier

⇒ Coulomb friction is

the force of sliding friction between dry surfaces

the force of friction between moving surfaces separated by viscous fluid

the force required to initiate motion between two contacting surfaces

all of the above

⇒ Given two numbers A and B in sign magnitude representation in an eight bit format A = 00011110 and B = 10011100 then A ⊕ B gives

10000010

11111

10011101

11100001

⇒ The symbol in figure is

SUS

SBS

SCS

Shockley diode