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Q1. | In VCR the luminance signal is recorded by |

A. | frequency modulation [Correct Answer] |

B. | phase modulation [Wrong Answer] |

C. | amplitude modulation [Wrong Answer] |

D. | direct recording [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 :**

⇒ A three-section RC phase shift oscillator has R = 10K ohms and C = 0.001 μF. If the oscillator is to be made variable using the same value of R, what should be the value of capacitor to obtain a frequency if 1 kHz?

636 pF

180 pF

65 pF

30 pF

⇒ Which of the following microphones has an inbuilt amplifier?

Condenser

Moving coil

Ribbon

Carbon

⇒ An engineer designs an amplifier to have a voltage gain of 60, but when constructed it only had a gain of 50. Which of the following will increases from this type of operation?

Stability

Bandwidth

Distortion

Input resistance

⇒ In fi

the collector currents of T

_{1}and T

_{2}are equal

the collector current of T

_{1}is more than that of T

_{2}

the collector current of T

_{1}is double that of T

_{2}

the collector currents of T

_{2}is more than that of T

_{1}

⇒ Which of the following DO statements is invalid in FORTRAN 77?

DO 161 = 1, 15

DO 16 1 = 1, 10, 1

DO 16 I = - 5, 5, 2

none of the above

⇒ (62)

_{10}in binary system is

110000

111100

111110

111111

⇒ If a number of even functions are added, the resultant sum is

even function

odd funtion

either even or odd function

mixture of odd amd even functions

⇒ 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}

⇒ A 2 bit binary multiplier can be implemented using

2 inputs ANDs only

2 inputs XORs and 4 input AND gates only

Two 2 inputs NORs and one XNOR gate

XOR gates and shift registers

⇒ The hexadecimal number given below represent decimal numbers which are multiples of DC, C8, BE, 46, IE

2

6

7

10

⇒ The range of visible light is

300 to 2000 Å

200 - 4000 Å

4000 to 7700 Å

more than 10000 Å

⇒ Which of the following pairs of semiconductors and current carriers is correctly matched?

Intrinsic : number of electrons = number of holes

*P*type : number of electrons > number of holes

*N*type : number of electrons < number of holes

Bulk : neither electrons nor holes

⇒ The rating of a transformer to deliver 100 watts of D.C. power to a load under half wave rectifier will be nearly

1 kVA

350 VA

175 VA

108 VA

⇒ Resistivity of metals is expressed in terms of

μ ohm

μ ohm/cm

μ ohm-cm

μ ohm-cm/°C

⇒ Which of the following instruction modes does not exist in microprocessor 8085?

Inherent

Immediate

Absolute

Indirect

⇒ Which one of the systems described by the following I/P - O/P relations is time invariant

*y*(

*n*) =

*n*

*x*(

*n*)

*y*(

*n*) =

*x*(

*n*) -

*x*(

*n*- 1)

*y*(

*n*) =

*x*(-

*n*)

*y*(

*n*) =

*x*(

*n*) cos 2p

*f*

_{0}

*n*

⇒ In an RC-coupled amplifier for improving the low frequency response

lower R

_{L}is provided

more bias is used

less gain is provided

higher C

_{C}is used

⇒

**Assertion (A):** In loss of charge method, it is preferable to use an electronic voltmeter.

**Reason (R):** The resistance of electronic voltmeter is very high.

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

⇒ In the circuit, the value of the voltage sour

-22 V

-12 V

+12 V

-10 V

⇒ Strip lines are used at

microwave frequency

low frequency

High frequency

at any frequency

⇒ For the system in the given figure, the gain margi

0

low

+ ∞

none of the above

⇒ It is required that a strain gauge has gauge factor of 100. The proper strain gauge is

constantan strain gauge

nichrome strain gauge

semiconductor strain gauge

alloy strain gauge

⇒ Astable multivibrator has

one stable state

two stable state

two quasi-stable states

one quasi stable state

⇒ The spectrum of the white noise and an impulse function is similar in following aspects

both have similar magnitude spectrum

both have similar magnitude and Phase spectrum

no relation

similar phase spectrum

⇒ The contents of F register in 8085 are 01010001. This means

S = 0, Z = 1, AC = 1, P = 0 and CY=1

S = 1, Z = 1, AC = 1, P = 0 and CY=1

S = 1, Z = 0, AC = 1, P = 0 and CY=1

S = 1, Z = 0, AC = 0, P = 0 and CY=1

⇒ The hex number EB

_{16}represents binary number of

11101011

10010110

10101100

11101011

⇒

**Assertion (A):** Even if TTL gates and CMOS gates used in a realization have the same power supply of + 5 V, suitable circuit is needed to interconnect them

**Reason (R):** V_{OH}, V_{OL}, V_{IH} and V_{IL} of a TTL gave are respectively 2.4, 0.4, 2 and 0.8 V respectively. If supply voltage is + 5 V. V_{IL} and V_{IH} for CMOS gate for the supply voltage of + 5 V are 1.5 V and 3.5 V respectively.

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 true, R is false

A is false, R is true

⇒ As temperature increases the number of free electrons and holes in an intrinsic semiconductor

increases

decreases

remains the same

may increase or decrease

⇒ In figure

*v*

_{i}= 10 mV dc maximum. The maximum possible dc output offset voltag

60 mV dc

110 mV dc

130 mV dc

150 mV dc

⇒ In figure the bridge is balanced when Z

_{4}

120∠70°

187.5∠ - 10°

187.5∠ - 70°

333.3∠ - 70°