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Q1. | Frequency domain of a periodic triangular function is a |

A. | discrete sinc function [Wrong Answer] |

B. | continuous sampling function [Wrong Answer] |

C. | discrete sampling function [Wrong Answer] |

D. | continuous sampling square function [Correct Answer] |

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

⇒

Match the following:

List I (Devices) | List II (characteristic) | ||
---|---|---|---|

A. | BJT | 1. | Voltage controlled negative resistance |

B. | MOSFET | 2. | High current gain |

C. | Tunnel diode | 3. | Voltage regulation |

D. | Zener diode | 4. | High input impedance |

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

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

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

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

⇒ Which of the following amplifiers has highest output impedance?

CE

CB

CC

Push pull

⇒ A two port network is reciprocal if and only if

Z

_{11}= Z

_{22}

BC - AD = - 1

Y

_{12}= Y

_{21}

*h*

_{12}=

*h*

_{21}

⇒ In microwave communication links, when fading due to rain attenuation occurs then technique adopted for solving the problem would include

antenna replacement and feed correction

amplitude timing and phase correction

polarization shifting and code diversity

path diversity and frequency diversity

⇒ A class C amplifier uses

high Q tuned circuit

low Q tuned circuit

untuned circuit

either (b) or (c)

⇒ The specified maximum junction temperature of thyristors is about

50°C

80°C

120°C

200°C

⇒ If B

_{max}is the maximum flux density, hysteresis loss is proportional to

B

_{max}

B

^{1.6}

_{max}

B

^{2}

_{max}

B

^{3}

_{max}

⇒ A coil is connected across a 200 V, 50 Hz supply and takes a current of 10 A. The loss in the coil is 1000 W. The impedance and resistance of the coil are

10 Ω, 8 Ω

15 Ω, 8 Ω

20 Ω, 10 Ω

30 Ω, 15 Ω

⇒ In figure, capacitor is used to develop pulses of short duration and large duty cycle across R

_{2}when switch is closed. Which of the following combinations is best sui

R

_{1}and R

_{2}large but C small

R

_{1}and R

_{2}small but C large

R

_{1}and C large and R

_{2}small

R

_{2}and C large but R

_{1}small

⇒ If E (i.e., available energy state) = E

_{F}(i.e., Fermi level), then probability that state E will be occupied is 0.5 for any temperature T.

TRUE

FALSE

⇒ In a photo emissive device and emission efficiency is increased by

coating the cathode ray by an active materials

coating the cathode by an insulating material

heating the cathode

cooling the anode

⇒ When a lead acid battery is being charged, the specific gravity of the electrolyte

decreases

increases

either increases or decreases

remains the same

⇒ How many and which types of machine cycles are needed to execute PUSH PSW by 8085 microprocessor?

2, Fetch and memory write

3, Fetch and memory write

3, Fetch and memory read

3, Fetch and memory read and memory write

⇒ The state equations are in the form

X = AX + BW

X = AX + Bu

X = AX + Bx

either (a) or (b)

⇒ A total of 16 equally probable events exist. If it is required to select one out of them, the number of required bits is

2

4

3

5

⇒ The resistance of a standard conductor.

increases with frequency

same for

*ac*and

*dc*

increases with frequency

increases as square root of frequency

⇒ Consider the following program for 8085

decimal 40

decimal 10

none of the above

⇒ Which class of amplifiers operates with least distortion?

Class A

Class B

Class C

Class AB

⇒ 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

⇒ Which of the following is not between F

_{2}layer and D layer?

E layer

F

_{1}layer

G region

All of the above

⇒ A counter type A/D converter contains a 4 bit binary ladder and a counter driven by a 2 MHz clock. Then conversion time

8 μ sec

10 μ sec

2 μ sec

5 μ sec

⇒ In a line with finite attenuation

power transmission is least efficient when there are no standing waves on the line

power transmission is most efficient when there are no standing waves on line

Load power depends on phase constant

standing waves will always exist on the line

⇒ An AND gate has two inputs A and B and one inhibit input S. Out of total 8 input states, output is 1 in

1 state

2 states

3 states

4 states

⇒ Human ear can detect sound intensities of the order of

10

^{-4}W/m

^{2}

10

^{-8}W/m

^{2}

10

^{-13}W/m

^{2}

10

^{-18}W/m

^{2}

⇒ A thyristor has internal power dissipation of 40W and is operated at an ambient temperature of 20°C. If thermal resistance is 1.6° C/W, the junction temperature is

114°C

164°C

94° C

84° C

⇒ The complement of Boolean expression AB (B C + AC) is

(A + B) + (B + C) + (A + C)

A B + (B + C)(A + C)

(A + B) + (B + C) (A + C)

none of the above

⇒ In the given circuit, V

_{1}= 40 V when R is 10 Ω. When R is zero, the value of V

_{2}wil

40 V

30 V

20 V

10 V

⇒ Above a certain temperature, the specific heat of a metal becomes constant. This temperature is called

Debye temperature

Curie temperature

Neel temperature

Transition temperature

⇒ The units of the spectrum obtained be Fourier transforming the covariance function of a stationery Stochastic Process is

Power per Hz

energy per Hz

Power per sec

Energy per second

⇒ In a FM receiver, amplitude limiter

amplifiers low frequency signals

reduces the amplitude of signals

eliminates any change in amplitude of received FM signals

none of the above