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Q1. | If a line having Z_{0} = 300 ∠ 0 W is open circuited at far end, VSWR is |

A. | 0 [Wrong Answer] |

B. | 1 [Wrong Answer] |

C. | ∞ [Correct Answer] |

D. | 2 [Wrong Answer] |

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Explanation:-
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**Also Read Similar Questions Below :**

⇒

**Assertion (A):** Derivative control action is also called rate control and has an anticipatory character.

**Reason (R):** Derivative control amplifies noise signals.

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

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

A is correct but R is wrong

R is correct but A is wrong

⇒ For the infix expression (A/B) * (C * F + (A - D) * E) the corresponding Post fix notation is

A / D * CF AD - F * +

AB / CF * AD - E * + *

AB / C * FAD - E * + *

None of the above

⇒ In a full wave voltage doubler circuit, the input frequency is 560 Hz. The ripple frequency is

25 Hz

50 Hz

100 Hz

200 Hz

⇒ The current flowing through the resistance R in the circuit in the figure has the form 2 cos 4

*t*, where

(0.18 +

*j*0.72)

(0.46 +

*j*1.90)

- (0.18 +

*j*1.90)

(0.23 - 0.35

*j*)

⇒ Two identical NMOS transistors M

_{1}and M

_{2}are connected as shown below. V

_{bias}is chosen so that both transistors are in saturation. The equivalent

*g*of the pair is defined t

_{m}the sum of individual

*g*'s of the transistors

_{m}the product of individual

*g*'s of the transistors

_{m}nearly equal to the

*g*of M

_{m}_{1}

nearly equal to

*g*/

_{m}*g*

_{0}of M

_{2}

⇒ Two impedances 10 -

*j*10 and 10 +

*j*10 are connected in parallel. Their combined impedance is

5 +

*j*5

5 -

*j*5

10 +

*j*0

20 -

*j*10

⇒ Two infinitely long wires carrying current are as shown in the figure below. One wire is in the y-z plane and parallel to the y-axis. The other wise is in the x-y plane and parallel to the x-axis. Which components of the resulting magnetic field are non-zero at the ori

x, y, z components

x, y components

y, z components

x, z components

⇒ In figure, D

_{1}turns on

*v*

_{i}is more than V

_{1}

*v*

_{i}is less than V

_{1}

*v*

_{i}is between V

_{1}and V

_{2}

none of the above

⇒ In Schering bridge, the potential of detector above earth potential is about

a few volts

10 kV

1000 V

either (a) or (b)

⇒ The minor M

*of an*

_{ij}*n*x

*n*matrix is the determinant of (

*n*- 1) x (

*n*- 1) matrix formed by deleting the

*i*th row and

*j*the column of

*n*x

*n*matrix.

TRUE

FALSE

⇒ The relationship of hysteresis loss to maximum flux density was first determined by

C. Steinmetz

G.R. Kirchoff

Mr. Laplace

Mr. Ampere

⇒ In figure,

*i*(

*t*) is a unit step current. The steady state value of

*v*(

*t*

2 V

3 V

6 V

9 V

⇒ In a practical voltage source, the terminal voltage

cannot be less than source voltage

cannot be higher than source voltage

is always less than source voltage

is always equal to source voltage

⇒ In Jone chopper, the commutating element

is a capacitor

is a capacitor and an inductor

is a capacitor and an auto transformer

none of the above

⇒ A varactor diode is

reverse biased

forward biased

biased to breakdown

unbiased

⇒

*x*= AX + B

*u*is a state equation.

TRUE

FALSE

⇒ In figure, the voltmeter is ideal. The transformer has two identical windings with perfect coupling. The reading of voltmete

440 V

220 V

110 V

zero

⇒ In a pneumatic bellows

the input surface, output surface and side walls are corrugated

the input surface and output surface are flat but the side walls are corrugated

the input surface and side walls are flat but the output surface is corrugated

the input surface and output surface are corrugated but the side walls are flat

⇒ A 3 phase series inverter has

12 thyristors

6 thyristors

3 thyristors

3 or 6 thyristors

⇒ The analog signal

*m*(

*t*) is given below

*m*(

*t*) = 4 cos 100 p

*t*+ 8 sin 200 p

*t*+ cos 300 p

*t*, the Nyquist sampling rate will be

1/100

1/200

1/300

1/600

⇒ In a pure capacitive circuit if the supply frequency is reduced to 1/2, the current will

be reduced by half

be doubled

be four times as high

be reduced to one fourth

⇒ In figure, the power dissipated in 4 resistance is P

_{1}and power associated with 3 A source is P

_{2}.

P

_{1}= P

_{2}

P

_{1}< P

_{2}

P

_{1}> P

_{2}

P

_{1}may be equal or less than P

_{2}

⇒ High speed counter

ring counter

ripple counter

synchronous counter

asynchronous counter

⇒ In a shield helix

the spacing between adjacent turns is very large

the spacing between adjacent turns approaches zero

the spacing between adjacent turns approaches zero and wire thickness approaches zero

the spacing between adjacent turns is very large wire thickness approaches zero

⇒ Which of the following is abnormal variation in ionosphere?

Diurnal variation

Seasonal variation

Ionospheric storms

None of the above

⇒ Complex poles give rise to oscillatory terms in the response.

TRUE

FALSE

⇒ A digital voltmeter can count from 0 to 9999. If full scale reading is 9.999 V, the resolution of full scale reading is

0.001

1000

2 digit

1 mV

⇒ Which one of the following statements is correct for MOSFETS?

p channel MOS is easier to produce than n channel MOS

n channel MOS must have twice the area of p channel MOS for the same ON resistance

p channel MOS has faster switching action than n channel MOS

p channel MOS has higher packing density than n channel MOS

⇒ Which of the following are synonymous?

MOSFET and IGEFT

FET and JFET

JFET and MOSFET

P-N-P and N-P-N

⇒ The Z inverse of the given Z transfor

Unit step

Unit ramp

Unit impulse

Unit parabola