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Q1. | PAL stands for |

A. | Phase Attenuation by Line [Wrong Answer] |

B. | Phase Alternation by Line [Correct Answer] |

C. | Parabolic Alternation by Line [Wrong Answer] |

D. | Picture Alternation by Line [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 :**

⇒ The coil of a DArsonval galvanometer has N turns. If flux density is B, current is I and area of coil is A, the deflecting torque is

NBI/A

NBIA

NIA/B

N

^{2}IAB

⇒ Consider the following statem

1 alone

2 alone

3 alone

1 and 3

⇒ In a zener diode

the forward current is very high

sharp breakdown occurs at a certain reverse voltage

the ratio

*v*-

*i*can be negative

there are two

*p*-

*n*junctions

⇒ Wave A starts its positive half cycle at ω

*t*= 30° and wave B starts its positive half cycle at ω

*t*= 75° then wave B is leading wave A by 45°.

TRUE

FALSE

⇒ When an ac circuit has sources of different frequencies, the only method of analysis is superposition theorem.

TRUE

FALSE

⇒ Which of the following is correct in FORTRAN 77?

`PARAMETER PMOS = 9.8, NMOS = X`

`PARAMETER (PMOS = 9.8, NMOS = X)`

`PARAMETER PMOS = 9.8, NMOS = X`

`PARAMETER PMOS, NMOS = 9.8, X`

⇒ In a JK flip flop output Q

*= 1 and it does not change when clock pulse is applied. The possible combination of J*

_{n}*and K*

_{n}_{n}is (X denotes don't care)

X and 0

X and 1

0 and X

1 and X

⇒ A Hartley oscillator is used for

very low frequencies

radio frequencies

micro wave frequencies

audio frequency

⇒ If any term in the first column of a Routh array becomes zero, then

Routh criterion cannot be used to determine stability

Routh criterion can be used by substituting a small positive number for zero and completing the array

Routh criterion can be used by substituting a big positive number for zero and completing the array

Routh criterion can be used by substituting a small negative number for zero and completing the array

⇒ The inverse of given Laplace transfor

sin

*t*

cos

*t*

*e*

^{t}*e*

^{2t}

⇒ If the ratio of ac to dc load impedance of a diode detector is low, the result will be

poor AGC operation

poor AF response

negative peak clipping

diagonal clipping

⇒ In Z

_{RC}(

*s*) = constant at

*s*= 0, the last element in first Foster cauer realization is

R

C

R and C in series

R and C in parallel

⇒ Leakage current approximately doubles for every 10°C increase in the temperature of a transistor has I

_{CBO}= 400 nA at 25°C, then its leakage current at 80°C

10 μA

18 μA

20 μA

15 μA

⇒ An AND gate has four inputs. One of the inputs is low and other inputs are high. The output

is low

is high

is alternately low and high

may be high or low depending on relative magnitudes of inputs

⇒ Adder is a combinational logic circuit.

TRUE

FALSE

⇒

*n*-type semiconductors

are negatively charged

are produced when indium is added as impurity to germanium

are produced when phosphorus is added as impurity to silicon

none of the above

⇒ The accumulator drives the ALU.

TRUE

FALSE

⇒ Audio systems use transverse recording.

TRUE

FALSE

⇒ The spins in a ferrimagnetic material are

all aligned parallel

partially aligned antiparallel without exactly cancelling out sublattice magnetisation

randomly oriented

all aligned antiparallel such that the sublattice cancels out exactly

⇒ Which of the following circuits cannot be demodulate SSB?

Product detector

Balanced modulator

Phase discriminator

BFO

⇒ Consider the following DO statement in Fortran 77

11

10

4

⇒ An 8 level encoding scheme is used in a PCM system of 10

*k*H

*z*channel BW. The channel capacity is

80

*kbps*

60

*kbps*

30

*kbps*

18

*kbps*

⇒ As frequency is increased, the skin effect

increases

decreases

remains the same

either (b) or (c)

⇒ Find the Fourier transform of the half cosine pulse as shown bel

0.5 {sin

*c*[0.25(

*f*- 1)] + sin

*c*[2.5(

*f*+ 1)]}

0.5 {sin

*c*[0.5(

*f*- 1)] + sin

*c*[0.5(

*f*+ 1)]}

0.25 {sin

*c*[0.25(

*f*- 1)] + sin

*c*[0.25 (

*f*- 1)]}

0.25 {sin

*c*[0.5(

*f*- 1)] + sin

*c*[0.5(

*f*- 1)]}

⇒ The temperature below which certain materials are antiferromagnetic and above which they are paramagnetic is called

Weiss temperature

Curie temperature

Neel temperature

None of the above

⇒ The hot resistance of a tungsten lame is about 12 times its cold resistance. Accordingly, the cold resistance of a 60 Ω, 120 V lamp is about __________ ohm.

5

240

2

2880

⇒ The amplifier circuit shown below uses a silicon transistor. The capacitors C

_{c}and C

_{E}can be assumed to be short at signal frequency and the effect of output resistance

*r*

_{0}can be ignored. If C

_{E}is disconnected from the circuit, which one of the following statements is T

The input resistance R

_{i}increases and the magnitude of voltage gain A

_{v}decreases

The input resistance R

_{i}decreases and the magnitude of voltage gain A

_{v}decreases

Both input resistance R

_{i}and the magnitude of voltage gain A

_{v}decrease

Both input resistance R

_{i}and the magnitude of voltage gain A

_{v}increase

⇒ The capacitance of a capacitor is not affected by

area of plates

thickness of plates

∈

_{r}

distance between plates

⇒ 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

⇒ Secondary emission results

when temperature of metals is raised to a level above the crystallization temperature

when metals are subjected to strong magnetic fields

when light rays fall on the metal surface

when a high velocity beam of electrons strikes as metal surface