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Q1. | The Boolean expression for the shaded area in the Venn diagra |

A. | X + Y + Z [Wrong Answer] |

B. | XY + Z + X YZ [Wrong Answer] |

C. | X Y Z + XY [Correct Answer] |

D. | X + Y + Z [Wrong Answer] |

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

⇒ A decade counter

counts for ten days

counts ten times faster than a binary counters

counts to 9 and reset on the next pulse

reverts on the pulse after the tenth

⇒ The 8085 microprocessor is interrupted while executing MOV instruction at location 0210 H. What is the location at which contents of register D are stored

054 CH

054 DH

054 EH

054 FH

⇒

**Assertion (A):** In a serial in-serial out shift register, access is available only to the left most or right most flip flops

**Reason (R):** If the output of a shift register is feedback to serial input it can be used as a ring counter.

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

⇒ Measurement of Hall coefficient enables the determination of

transportation factor decreases and a increases

transportation factor increases and a increases

transportation factor increases and a decreases

transportation factor decreases and a decreases

⇒ Which of the following statements are executable in FORTRAN 77?

Arithmetic IF

Assign

Call

All of the above

⇒ A plane EM wave is travelling in an unbound loss less dielectric having μ

_{y}= 1 and ε

_{y}= 4, the time average Poynting vector of the wave is 5 W/m

^{3}. The phase velocity

*v*

_{p}(assuming velocity of light as 3 x 10

^{8}m/sec) is

1.5 x 10

^{8}m/sec

3 x 10

^{8}m/sec

2.5 x 10

^{8}m/sec

0.5 x 10

^{8}m/sec

⇒ When a normal atom loses an electron

the atom loses one-proton simultaneously

rest of the electrons move faster

the atom becomes a positive ion

the atom becomes a negative ion

⇒ With respect to the following 555 timer circuit what will be the value of R

_{A}and R such that the LED turns on for a duration of 10

*ms*every time it receives negative trigger pulse. LED operating current = 20

*m*A, V

_{f}= 1.4 V, V

*o*

_{on}= 13.4 V and C = 0.22

*nf*

41.4 KΩ, 600 Ω

45 KΩ, 630 Ω

43.5 KΩ, 580 Ω

44.9 KΩ, 600 Ω

41.4 KΩ, 600 Ω

45 KΩ, 630 Ω

43.5 KΩ, 580 Ω

44.9 KΩ, 600 Ω

⇒ Thermal run away of a transistor occurs when

heat dissipation from transistor is excessive

transistor joints melt due to high temperature

there is excessive leakage current due to temperature rise

none of the above

⇒ For a transistor amplifier with self biasing network, the following components are used. R

4

3

2

1.5

⇒ A ripple counter has 4 bits and uses flip flops with propagation delay time of 25 ns. The maximum possible time for change of state will be

25 ns

50 ns

75 ns

100 ns

⇒ The distributors for residential areas are

single phase

three phase three wire

three phase 4 wire

(a) or (b)

⇒ Which instrument needs creep compensation?

Dynamometer wattmeter

Induction wattmeter

Energy meter

Both (b) and (c)

⇒ In a rectangular waveguide if operating frequency is greater than cut off frequency then propagation constant is

purely real

purely imaginary

equal to unit

a complex number

⇒ The conduction band is

same as forbidden energy gap

generally located on the top of the crystal

generally located on the bottom of the crystal

a range of energies corresponding to the energies of the free electrons

⇒

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

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

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

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

⇒ How much is contributed by each bit in the code word of a PCM system under uniform and symmetric quantization to the signal to noise ratio?

3 dB

4 dB

5 dB

6 dB

⇒ A linear discrete time system has the char. equation

stable

marginally stable

unstable

stability cannot be assessed from the given information

⇒ The network shown in figur

reciprocal

reciprocal and symmetrical

non-reciprocal

unsymmetrical

⇒ The ground waves eventually disappear as one moves away from the transmitter because of

tilting

maximum single-hop distance limitation

interference from the sky waves

loss of line-of sight condition

⇒ A transmitter power of 10 W is increased by 30 dB. The effective radiated power is

100 W

1000 W

10000 W

100000 W

⇒ In figure, the power associated with 3 A sourc

36 W

24 W

16 W

8 W

⇒

Both A and R are correct and R is correct explanation for A

Both A and R are correct but R is not correct explanation for A

A is correct R is wrong

A is wrong R is correct

⇒ Minimum number of 2-input NAND gates required to implement the function F = (x + y) (Z + W) is

3

4

5

6

⇒ -8 is equal to signed binary number

10001000

1000

10000000

11000000

⇒ In the case of a 70-MHz IF carrier for a transponder bandwidth of 36 MHz, energy must lie between MHz.

34 and 106

52 and 88

106 and 142

34 and 142

⇒ The resolution of a DAC depends on which of the following?

The number of bits

Monotonicity

Reference voltage

The values of resistance

⇒ The presence of some holes in an intrinsic semiconductor at room temperature is due to

valence electrons

doping

free electrons

thermal energy

⇒ The IF stage of a receiver employs

capacitive coupling

impedance coupling

double-tuned transformer coupling

single-tuned transformer coupling

⇒ The voltage drop per ampere-metre of an aluminium conductor is higher as compared to a copper conductor of the same size due to its higher

insulation resistance

resistivity

conductivity

current density

⇒ Thermal run away of a transistor occurs when

heat dissipation from transistor is excessive

transistor joints melt due to high temperature

there is excessive leakage current due to temperature rise

none of the above

⇒ For a transistor amplifier with self biasing network, the following components are used. R

_{1}= 4 kΩ, R_{2}= 4 kΩ, R_{C}= 1 kΩ. The approximate value of the stability factor 'S' will be4

3

2

1.5

⇒ A ripple counter has 4 bits and uses flip flops with propagation delay time of 25 ns. The maximum possible time for change of state will be

25 ns

50 ns

75 ns

100 ns

⇒ The distributors for residential areas are

single phase

three phase three wire

three phase 4 wire

(a) or (b)

⇒ Which instrument needs creep compensation?

Dynamometer wattmeter

Induction wattmeter

Energy meter

Both (b) and (c)

⇒ In a rectangular waveguide if operating frequency is greater than cut off frequency then propagation constant is

purely real

purely imaginary

equal to unit

a complex number

⇒ The conduction band is

same as forbidden energy gap

generally located on the top of the crystal

generally located on the bottom of the crystal

a range of energies corresponding to the energies of the free electrons

⇒

Match the following:

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

A. | AM-DSB FC | 1. | 2 |

B. | WBFM | 2. | 1 |

C. | PCM | 3. | 3m |

D. | AM-DSB | 4. | 2^{2N} |

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

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

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

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

⇒ How much is contributed by each bit in the code word of a PCM system under uniform and symmetric quantization to the signal to noise ratio?

3 dB

4 dB

5 dB

6 dB

⇒ A linear discrete time system has the char. equation

*z*^{3}- 0.81*z*= 0, the system isstable

marginally stable

unstable

stability cannot be assessed from the given information

⇒ The network shown in figur

reciprocal

reciprocal and symmetrical

non-reciprocal

unsymmetrical

⇒ The ground waves eventually disappear as one moves away from the transmitter because of

tilting

maximum single-hop distance limitation

interference from the sky waves

loss of line-of sight condition

⇒ A transmitter power of 10 W is increased by 30 dB. The effective radiated power is

100 W

1000 W

10000 W

100000 W

⇒ In figure, the power associated with 3 A sourc

36 W

24 W

16 W

8 W

⇒

**Assertion (A):** In a full wave rectifier output the lowest ac component is at twice the input frequency

**Reason (R):** In a full wave rectifier, the output waveform consists of half sinusoids

Both A and R are correct and R is correct explanation for A

Both A and R are correct but R is not correct explanation for A

A is correct R is wrong

A is wrong R is correct

⇒ Minimum number of 2-input NAND gates required to implement the function F = (x + y) (Z + W) is

3

4

5

6

⇒ -8 is equal to signed binary number

10001000

1000

10000000

11000000

⇒ In the case of a 70-MHz IF carrier for a transponder bandwidth of 36 MHz, energy must lie between MHz.

34 and 106

52 and 88

106 and 142

34 and 142

⇒ The resolution of a DAC depends on which of the following?

The number of bits

Monotonicity

Reference voltage

The values of resistance

⇒ The presence of some holes in an intrinsic semiconductor at room temperature is due to

valence electrons

doping

free electrons

thermal energy

⇒ The IF stage of a receiver employs

capacitive coupling

impedance coupling

double-tuned transformer coupling

single-tuned transformer coupling

⇒ The voltage drop per ampere-metre of an aluminium conductor is higher as compared to a copper conductor of the same size due to its higher

insulation resistance

resistivity

conductivity

current density