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Q1. | A balun transformer gives an impedance transformation of |

A. | 0.167361111111111 [Correct Answer] |

B. | 0.0840277777777778 [Wrong Answer] |

C. | 0.0444444444444444 [Wrong Answer] |

D. | 0.0430555555555556 [Wrong Answer] |

View Answer
Explanation:-
Answer : ADiscuss 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 :**

⇒ For an RC admittance function

all poles and zeros are simple

all poles and zeros are simple and lie on negative real axis

all poles and zeros lie on imaginary axis

all poles and zeros lie on positive real axis

⇒ Choose the correct option

- Transit period is the time between two steady state
- Transient Response is the response due to internal energy stored in circuit
- Transit response is also called natural response
- Transit response arises due to presence of C and L in the circuit
- Transit is due to R, L, C in the circuit

4, 3, 2 , 1

5, 4, 3, 2

5, 4, 3, 1

5, 1, 4

⇒ Consider the following statements

- Acceptor level lies close the valence band.
- Donor level lies close to the valence band.
*n*type semiconductor behaves as an insulator at 0 K.*p*type semiconductor behaves as an insulator at 0 K.

2 and 3 are correct

1 and 3 are correct

1 and 4 are correct

3 and 4 are correct

⇒ A microprocessor needs memory chips and input-output chip to form a microcomputer.

TRUE

FALSE

⇒ For an n-channel JEFT having drain source voltage constant if the gate source voltage is increased (more negative) pinch off would occur for

high values of drain current

saturation values of drain current

zero drain current

gate current equal to the drain current

⇒ A 2 bit binary multiplier can be implemented using

2 inputs ANDs only

2 I/P XOR and 4 I/P AND gate only

two 2 inputs NORs and One XNOR gate

XOR gates and shift registers

⇒ The radiation resistance of a doublet antenna of length dl is proportional to

δ

*l*

(δ

*l*)

^{2}

(δ

*l*)

^{3}

(δ

*l*)

^{05}

⇒ In a triode

grid is nearer to cathode than anode

grid is nearer to anode than cathode

grid is equidistant from anode and cathode

any of the above

⇒ In an electrochemical process the mass of material deposited at an electrode is proportional to

time for which current is passed

magnitude of current

electric charge through the electrolyte

none of the above

⇒ Which of the following does not show non-linear V-I characteristics?

Schottky diode

Tunnel diode

Thermister, at a fixed temperature

*p-n*junction diode

⇒ In a differential amplifier, CMRR can be improved by using an increased

emitter resistance

collector resistance

power supply voltages

source resistance

⇒ A moving iron instrument has

two iron vanes, one fixed and one movable

two movable iron vanes

two aluminium vanes, one fixed and one movable

two vanes, one fixed made of Aluminium and the other movable made of iron

⇒ Which of the following measurements using a dc potentiometer do not require standardisation of potentiometer?

Measurement of unknown voltage

Measurement of resistance

Measurement of unknown current

Calibration of voltmeter

⇒ Choose correct option for a stable system :

- Roots of the characteristic equation of the system are real and negative
- Area within the impulse response is finite

I is true, II is true

I is true, II is false

I is false, II is true

I is false, II is false

⇒ The capacitors C

_{1}, C

_{3}, C

_{4}and C

_{5}have a capacitance of 4 μF each and the capacitor C

_{2}has a capacitance of 10 μF. The effective capacitance (in μF) between the points X and Y will

4 μF

6 μF

3 μF

8 μF

⇒ What will happen to a bird sitting on a conductor?

It will die of shock

It will not die of shock because its claws are insulated

It will not die because it is insulated from earth and other conductors

None of the above

⇒ Assume that only

*x*and

*y*logic inputs are available. What is the minimum number of 2-input NAND gates required to implement

*x*⊕

*y*?

2

3

4

5

⇒ The number of flip flops needed for a Mod 7 counter are

7

5

3

1

⇒ A P-N junction offers

high resistance in forward as well as reverse direction

low resistance in forward as well as reverse direction

conducts in forward direction only

conducts in reverse direction only

⇒ Which of the following statements are executable in FORTRAN 77?

Arithmetic IF

Assign

Call

All of the above

⇒ Work function is the maximum energy required by the fastest electron at 0 K to escape from the metal surface.

TRUE

FALSE

⇒ In a computer the instructions, data, intermediate and final results during processing are held in ALU.

TRUE

FALSE

⇒ For the signal flow graph of the given figure consider the following statements

- It has three forward paths
- It has three individual loops
- It has two non touching loops

1, 2, 3

1, 2

2, 3

1, 3

⇒ Mobility of electrons and holes are equal.

TRUE

FALSE

⇒ When a lead acid cell discharges, the specific gravity of electrolyte increases.

TRUE

FALSE

⇒ Which of the following oscillator is not in FM?

Crystal oscillator

Hartley oscillator

Colpitts oscillator

All of the above

⇒ The number of doped regions in a bipolar junction transistor is

1

2

3

4

⇒ Which of the following are true for relative dielectric constant?

- It is dimensionless.
- It is equal to 1 for vacuum.
- It is equal to 1 for all substances.

1 and 2 only

2 and 3 only

1 and 3 only

1, 2 and 3

⇒ If

*p*is the probability of success and

*q*is the probability of failure, then the probability that there are

*r*successes in

*n*trails is

^{n}

*c*

_{r}

*p*

^{r}*q*

^{n}

^{-}

^{r}

^{n}*c*

_{r}

*p*

^{n -}

^{r}*q*

^{r}^{n}

*c*

_{r}

*p*

^{r}*q*

^{n}

^{+}

^{r}

^{n}*c*

_{r}*p*

^{n}*q*

^{n}^{- r}

⇒ Consider the following statements: The radar pulse must be flat topped to

- allow accurate range measurement
- allow good minimum range
- prevent frequency changes in magnetron
- make the returned echoes easier to distinguish from noise.

1, 2, 3, 4

1, 2, 3

1, 2

1, 3, 4