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Q1. | In carbon resistor colour code, if the third band is of silver, it indicates |

A. | that three zeros are to be added to indicate the resistance value [Wrong Answer] |

B. | multiplier is 0.01 [Correct Answer] |

C. | multiplier is 0.1 [Wrong Answer] |

D. | tolerance is ± 5% [Wrong Answer] |

View Answer
Explanation:-
Answer : BDiscuss 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 :**

⇒

**Assertion (A):** In high Q circuits poles of Y(*s*) lie close to ω axis in complex frequency plane.

**Reason (R):** Q is inversely proportional to damping factor.

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

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

A is true but R is false

A is false but R is true

⇒ 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

⇒ While forming Routh's array, the situation of a row of zeros indicates that the system

has symmetrically located roots

is not sensitive to variations in gain

is stable

is unstable

⇒ In a series LCR circuit the maximum inductor voltage is twice the maximum capacitor voltage however current lags by 30° and drop across the inductance is

*v*

*= 100 sin 377*

_{L}*t*V. Assuming the resistance being 20 Ω, Find the values of the capacitance and inductance.

235 μF, 61.18 μH

230 μF, 61.18 μH

61.18 μF, 230 μH

None of the above

⇒ Consider the resonant circuit as shown b

R = 10

^{4}L = 5 μH C = 20 pF

1000 L = 50 μH C = 200 pF

10 K L = 50 μH C =20 pF

None of these

⇒ What is the propagation constant for air filled wave guide with dimensions

*a*= 1.59" and

*b*= 0.795" at 4.95 GHz?

0.6698

0.7698

0.503

0.6598

⇒ A DAC has full scale output of 5 V. If accuracy is ± 0.2% the maximum error for an output of 1 V is

5 mV

10 mV

2 mV

20 mV

⇒ For a transfer function H(

*s*) = P(

*s*)/Q(

*s*), where P(

*s*) and Q(

*s*) are polynomials in

*s*

the degrees of P(

*s*) is always greater than degree of Q(

*s*)

the degree of P(

*s*) and Q(

*s*) are equal

the degree of P(

*s*) is independent of degree of Q(

*s*)

the maximum difference in degrees of P(

*s*) and Q(

*s*) is 1

⇒ In the above case if the modulating frequency is increased to 20 kHz the bandwidth will be

0.05 MHz

1 MHz

2 MHz

4 MHz

⇒ In a klystron amplifier the input cavity is called

buncher

catcher

Pierce gun

collector

⇒ Number of cards read per minute by a card reader may be of the order of

20

1

10000

300

⇒ For a BJT, under the saturation region.

I

_{C}= βI

_{B}

I

_{C}> βI

_{B}

I

_{C}is independent of other parameter

I

_{C}< βI

_{B}

⇒ When negative feedback is used the fractional changes in closed loop gain are desensitized by the factor (1 + A

_{v}β)

TRUE

FALSE

⇒ Which of the following statement about the photo electric emission is incorrect?

The maximum velocity of emission varies with the frequency of incident light

The maximum velocity of emission varies with the intensity of light

The amount of photoelectric emission is directly proportional to the intensity of light

The quantum yield depends on the frequency and not the intensity of incident light

⇒ Personal computer cannot be used for which one of the following?

Game playing

Weather forecasting

Office Automation

Home computing

⇒ Consider the CMOS circuit shown, where the gate voltage V

_{G}of the n-MOSEFT is increased from zero, while the gate voltage of the p-MOSFET is kept constant at 3 V. Assume that, for both transistor, the magnitude of the threshold voltage is 1 V and the product of the transconductor parameter and the (W/L) ratio, i.e. the quality μC

_{0x}(W/L), is 1mA. V

^{-2Both the MOSFET are in saturation regionBoth the MOSFET are in triode regionn-MOSFET is in triode and p-MOSFET is in saturation regionn-MOSFET is in saturation and p-MOSFET is in triode region}

⇒ In a perfect conductor the incident and reflected wave combine to produce

a stronger incident wave

a stronger reflected wave

a standing wave which is not progressing

none of the above

⇒ For determining the network functions of a two-port network, it is required to consider that

all initial conditions remain same

all initial conditions are zero

part of initial conditions are equal to zero

initial conditions vary depending on nature of network

⇒ Two similar coupled coils are connected in series. The total inductance in series aiding connection is 100 mH. If currents is 3 A, the energy stored in magnetic field is

0.9 J

0.45 J

0.225 J

1.8 J

⇒ Consider the following expressions in J

42, 40, 42 respectively

42, 42, 42 respectively

40, 42, 42 respectively

40, 40, 42 respectively

⇒ Using 2's complement, the largest positive and negative number which can be stored with 8 bits are

+128 and -127

+128 and -128

+127 and -128

+127 and -127

⇒ When a wave reaches an open circuit

the voltage at termination is doubled the incident voltage

the current at termination is doubled the incident voltage

the voltage at termination is zero

both V and I at termination are doubled the incident voltage and current

⇒ The probability giving distribution of electrons over a range of allowed energy levels is known as

Maxwell's Distribution

Fermi-Dirac Distribution

Richardson Dushman Distribution

none of the above

⇒ For a reactance function H(

*s*)

Re [H(

*j*ω)] is positive for ω ≥ 0

Re [H(

*j*ω)] is zero for ω ≥ 0

Re [H(

*j*ω)] is positive or zero for ω ≥ 0

Re [H(

*j*ω)] is zero or negative for ω ≥ 0

⇒ At room temperature, the current in intrinsic semiconductor is due to

holes

electrons

ions

holes and electrons

⇒ When a vector has positive divergence, it indicates that the vector quantity has at that point and if the divergence is negative, it indicates __________ .

source, sink

sink, source

positive value, negative value

negative value, positive value

⇒ As per Shannon-Hartley theorem, a noise less Gaussian channel has

zero capacity

infinite capacity

small capacity

none of the above

⇒ The problem associated with tuned-radio frequency receiver is

instability

insufficient adjacent frequency rejection

bandwidth variation

all of the above

⇒ Power spectral density of white noise

is constant with frequency

increases with frequency

decreases with frequency

none

⇒ If C is thermal capacitance,

*m*is mass of liquid and

*c*is specific heat, then

C =

*mc*

*c*=

*m*C

*m*=

*c*C

C = (

*mc*)

^{2}