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Q1. | MCVF telegraphy causes |

A. | SSB techniques [Correct Answer] |

B. | pulse modulation [Wrong Answer] |

C. | Out of bond signalling [Wrong Answer] |

D. | FM [Wrong Answer] |

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

⇒ Shifting digits from left to right and vice versa is needed in

storing numbers

arithmetic operations

counting

storing and counting

⇒ As temperature increases

the forbidden energy gap in silicon and germanium increase

the forbidden energy gap in silicon and germanium decrease

the forbidden energy gap in silicon decreases while that in germanium decreases

the forbidden energy gap in silicon increases while that in germanium decreases

⇒ Which of the following output configurations are available in a TTL gate?

- Open collector output
- Totem pole output
- Tristate output

1 only

1 and 2 only

2 and 3 only

1, 2 and 3

⇒ The holes diffuse from P-region to the N-region in a P-N junction diode because

there is greater concentration of holes in the P-region as compared to N-region

there is greater concentration of holes in the N-region as compared to P-region

the free electrons in the N-region attract them

potential difference facilities such transfer

⇒ A cascade amplifier will have higher cut off frequency

equal to that of single stage amplifier

less than that of single stage amplifier

more than that of single stage amplifier

none of these

⇒ PIL colour picture tube has the main advantage that

it is cheap

it ensures purity in colour

it is self convergent

both (a) and (b)

⇒ Decimal 18.29 when converted int 10's complement will become

81.7707

81.7

81.777

81.077

⇒

Match the following:

List I | List II | ||
---|---|---|---|

A. | Resistance | 1. | M^{-1}L^{-2}T^{2}I^{2} |

B. | Inductance | 2. | ML^{2}T^{-2}I^{-2} |

C. | Capacitance | 3. | M^{-1}L^{-2}T^{4}I^{2} |

D. | Reluctance | 4. | ML^{2}T^{-3}I^{-2} |

A-1, B-2, C-3, D-4

A-2, B-1, C-3, D-4

A-4, B-2, C-3, D-1

A-2, B-4, C-3, D-1

⇒ The number of product terms in the minimized sum of product expression obtained through the following

*k*map is (where "

*d*" denotes don't care states)

2

3

4

5

⇒ The expression given is F(A, B, C, D, E, F, G, H) = Σ(33, 48, 102, 158, 222, 229, 233, 243, 255); then the __________ and __________ minterms are grouped together into dual and variable __________ is reduced using the dual

243, 233, D

222, 158, B

243, 255, A

229, 243, E

⇒ N circles for a = a

_{1}, and a = a

_{1}± 180°

*n*(where

*n*= 1, 2, 3, ....) are the same.

TRUE

FALSE

⇒ The closing of switch S

_{1}and S

_{2}in figure will ligh

lamp L

_{1}only

lamps L

_{1}and L

_{2}

none of them

lamp L

_{2}only

⇒

**Assertion (A):** Field emission is substantially independent of temperature.

**Reason (R):** When a high electric field is created at metal surface field emission may occur.

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

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

A is true but R is false

A is false but R is true

⇒ A linear time-invariant, causal continuous time system has a rational transfer function with simple poles at

*s*= - 2 and

*s*= - 4, and one simple zero at

*s*= - 1. A unit step

*u*(

*t*) is applied at the input of the system. At steady state, the output has constant value of 1. The impulse response of this system is

[exp (- 2

*t*) + exp (-4

*t*)]

*u*(

*t*)

[-4 exp (- 2

*t*) + 12 exp (-4

*t*) - exp (-

*t*)]

*u*(

*t*)

[-4 exp (- 2

*t*) + 12 exp (-4

*t*)]

*u*(

*t*)

[-0.5 exp (- 2

*t*) + 1.5 exp (-4

*t*)]

*u*(

*t*)

⇒ The inputs to logic gate are 0. The output is 1. The gate is

NAND or XOR

OR or XOR

AND or XOR

NOR or Ex-NOR

⇒ What is the gray code word for EX-OR the binary number 101011?

101011

110101

111110

11111

⇒

Match the following:

List I | List II | ||
---|---|---|---|

A. | PMMC | 1. | Square law type scale |

B. | Moving iron | 2. | Very good response |

C. | Thermo-couple | 3. | Linear scale |

D. | Electrostatic | 4. | Voltmeter |

A-4, B-1, C-2, D-3

A-3, B-2, C-1, D-4

A-4, B-2, C-1, D-3

A-3, B-1, C-2, D-4

⇒ If luminance signal Y = 0.3 R + 0.59 G + 0.11 B, the hue of R - Y colour is

0.7 R - 0.59 G - 0.11 B

- 0.7 R + 0.59 G + 0.11 B

1.3 R - 0.59 G - 0.11 B

none of the above

⇒ A step voltages is applied to RLC series circuit having R = 2 Ω, L = 1 H and C = 1 F. The transient current response will be

over damped

critically damped

under damped

any of the above depending the magnitude of voltage

⇒ Zoning is used with a dielectric antenna in order to

permit pin-point focusing

reduce the bulk of the lens

increase the bandwidth of the lens

correct the curvature of the wavefront from a horn that is too short

⇒ Consider the following network func

zero at origin

zero at infinity

pole at origin

pole at infinity

⇒ In high power AM transmission, modulation is done at

IF stage

buffer stage

RF stage

oscillator stage

⇒ For maximum output the width of air gap of audio head should be

equal to wavelength

half the wavelength

one quarter the wavelength

very small as compared to wavelength

⇒ For a second order system, the position of poles is shown in the given figure. This syste

undamped

overdamped

underdamped

critically damped

⇒ If zeros at infinity are included in the count, the number of zeros of G(

*s*) H(

*s*) is

equal to number of poles

one more than the number of poles

one less than the number of poles

none of the above

⇒ A constant

*k*high pass p section has a characteristic impedance of 300 Ω at

*f*= ∞ . At

*f*=

*f*

_{c}, the characteristic impedance will be

zero

∞

300 Ω

more than 300 Ω

⇒ A rectangular waveguide (2.29 x 1.02) cm operates at a freq. of 11 GHz in TE

_{10}mode. If the maximum potential gradient of the signal is 5 kV/cm, then the maximum power handling capacity of the waveguide will be

31.11 mW

31.11 W

31.11 kW

31.11 MW

⇒ The forms of IF statements in FORTRAN 77 are called

logical IF and Block IF

logical IF, block IF and arithmetic IF

logic IF, block IF, arithmetic IF and negate IF

logical IF and arithmetic IF

⇒ Figure represen

Tunnel diode

PNP transistor

Photo sensitive diode

Photo emissive diode

⇒ The MOS symbol shown indicates that

- It is depletion type
- It is enhancement type
- It is channel
- It is P-channel
- Electrons flow from
*s*to D - Holes flow from D to
*s*

1, 3, 6

1, 3, 5

2, 4, 6

2, 3, 5