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Q1. | The depth of penetration at 4 MHz is 10 cm, then at 2.5 MHz it is |

A. | 62.5 cm [Wrong Answer] |

B. | 13 cm [Correct Answer] |

C. | 6.25 cm [Wrong Answer] |

D. | 8 cm [Wrong Answer] |

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

⇒

**Assertion (A):** Schering bridge is a low voltage bridge.

**Reason (R):** Schering bridge is very commonly used for measurement of capacitance.

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 R is false

A is false R is true

⇒ The log magnitude curve of factor

*j*ω is a straight line having a slope of 20 dB/decade.

TRUE

FALSE

⇒ A transmission line has characteristics impedance of (75 +

*j*0.01) Ω and is terminated in a load impedance of (70 +

*j*50) Ω. The reflection coefficient will be

0.08 +

*j*0.32

0.32 +

*j*1.38

0.70 -

*j*2.97

1.1 +

*j*0.32

⇒ When phase-lag compensation is used in a system, then gain cross over frequency, bandwidth and undamped frequency are respectively

Increased, Increased, Increased

Increased, Increased, Decreased

Increased, Decreased, Decreased

Decreased, Decreased, Decreased

⇒ If all other parameters are the same, a capacitor with mica as dielectric has higher capacitance than air capacitor.

TRUE

FALSE

⇒ Data are recorded on a 2, 400 ft reel of magnetic tape at a density of 556 characters per inch. If the record length is of 100 characters and 0.75 inch of record gap, the tape utilization factor is

0.85

0.67

0.19

0.08

⇒ In a flip-flop with a NAND latch, a low

*R*and a low

*S*produces

active condition

inactive condition

race condition

dead condition

⇒ Paper capacitors are used in power supplies for filtering.

TRUE

FALSE

⇒ Which of the following devices should be used for accurate measurement of a low dc voltage?

Small range moving coil voltmeter

Dc potentiometer

Small range thermocouple voltmeter

Hot wire instrument

⇒ The response of a function is decided by

the location of its zeros

the location of its poles

both (a) and (b)

none of the above

⇒ In Pascal an array declaration provides information to the Pascal processor to enable it to

identify the variable as an array name

reserve memory locations to store all the components of array

check the values computed for subscripts expressions during program execution with the specified lower and upper limits of subscripts

all of the above

⇒ If the potential functions V

_{1}and V

_{2}satisfy Laplace's equation within a closed region and assume the same values on its surface, then which of the following is correct?

V

_{1}and V

_{2}are identical

V

_{1}is inversely proportional to V

_{2}

V

_{1}has the same direction as V

_{2}

V

_{1}has the same magnitude as V

_{2}but has different direction

⇒ A function is given

*f*(

*t*) = sin

^{2}

*t*+ cos

^{2}

*t*. Which of the following is true?

f has frequency components at 0 and 1/2p Hz

f has frequency components at 0 and 1/p Hz

f has frequency components at 1/2p and 1/p Hz

f has frequency components at 0, l/2p and 1/p Hz

⇒ Which of the statement is correct?

*h*and

*g*matrices are inverse of each other

*z*and

*y*matrices are inverse of each other

for reciprocal networks AD - BC = 1

ABCD parameters are used in transistor circuit

⇒ The reason for glitches on the outputs of decoding gates on a synchronous counter is

FFs changing states together

FFs changing states one at a time

AND gates not functioning properly

none of the above

⇒ In a minimum function

the degree of numerator is higher than that of denominator

the degree of numerator is lower than that of denominator

the degree of numerator and denominator are equal

the denominator is a constant

⇒ A sample of N-type semiconductor has electron density of 6.25 x 10

^{18}/cm

^{3}at 300k. If the intrinsic concentration of carriers in this sample is 2.5 x 10

^{13}/cm

^{3}at this temperature the hole density works out to be

10

^{6}/cm

^{3}

10

^{8}/cm

^{3}

10

^{10}/cm

^{3}

10

^{l2}/cm

^{3}

⇒ A coil has a resistance of 2 Ω and inductance of 0.1 mH. The applied voltages is suddenly increased from 10 V to 20 V. After steady state condition have reached, the current is

0.0833333333333333

more than 2 A but less than 4 A

0.166666666666667

more than 4 A

⇒ In figure, the steady state current through 1H inductanc

Zero

0.125

0.208333333333333

0.25

⇒ The skip distance is

same for each layer

independent of frequency

independent of the state of ionisation

independent of transmitted power

⇒ For a Gaussian process, auto-correlation also implies

statistical dependence

statistical independence

ergodic process

none of the above

⇒ In figure the current distribution is represented

curve A

curve B

curve C

curve D

⇒ Mutual impedance is not depend upon

magnitude of induced current

tuning condition

self impedance

phase relationship between induced and original currents

⇒ For the truth table of the given figure

A + B + C

A + BC

A

B

⇒ Assume that

*x*= 5 and

*y*= 2. Then in Java operation

*x*+ =

*y*, the result is

*x*= 7

*x*= 2

*x*= 3

*x*= 2

⇒ In RLC circuits the state variables generally selected are

voltages across capacitors

currents through resistances and voltages across capacitors

currents through resistances and capacitances

currents through inductances and voltages across capacitances

⇒ What is the characteristic impedance at 10 MHz?

547.7 Ω

54.7 Ω

5.47 Ω

.547 Ω

⇒ Which of the following can be accessed only sequentially?

Floppy disk

Hard disk

Magnetic tape

ROM

⇒ The number of valence electrons in germanium atom is

4

2

1

zero

⇒ The total number of leads in SUS, SBS and SCS respectively are

3, 3, 4,

3, 3, 3

2, 3, 3

3, 3, 5