Users Also Read

MCQ's Search Engine

Electrical Engineering

Mechanical Engineering

Civil Engineering

Automobile Engineering

Chemical Engineering

Computer Engineering

Electronics Engineering

Medical Science Engg

Q1. | Which of the following cannot be used to demodulate SSB? |

A. | Complete phase-shift generator [Wrong Answer] |

B. | Product detector [Wrong Answer] |

C. | Diode balanced modulator [Wrong Answer] |

D. | Bipolar transistor balanced modulator [Correct Answer] |

View Answer
Explanation:-
Answer : DDiscuss 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 :**

⇒ In an

*ac*circuit that delivers constant power at varying p.f., the current is

lowest when p.f. is leading

lowest when p.f. is lagging

lowest when p.f is unity

the same for all power factors

⇒ Which of the following statement is false?

Bandwidth of a circuit is given by the range of frequencies lying between half-power points

Half-power points on a resonance curve are those points where power is half of that at resonance

Half-power points are also known as 3

*d*B points

At both half-power points, the p.f. = 0.707 lagging

⇒

**Assertion (A):** The root locus of a control system is symmetrical about real axis.

**Reason (R):** For all polynomials with real coefficients, complex poles always occur in conjugate pairs.

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 correct but R is wrong

R is correct but A is wrong

⇒ In PAL system

phase of U signal is reversed on alternating lines

phase of V signal is reversed on alternating lines

phases of both U and V signals are reversed on alternating lines

none of the above

⇒ In figure which diode will conduct and what will be the value of V

_{0D3, 1 VD1, 2 VD2, 5 VD1, 5 V}

⇒ Which part of radio spectrum is more crowded?

Lower frequency part

Higher frequency part

Both (a) and (b)

None of these

⇒ Assuming accumulator contain A 64 and the carry is set (1). What will register A and (CY) contain after SBI 0B7H?

12 H, 0

12 H, 1

DDH, 0

DDH, 1

⇒ Which of the following instruments is used almost exclusively to measure radio frequency currents?

Moving coil

Rectifier

Moving iron

Thermocouple

⇒ The slope of log magnitude curve near the cut off frequency is called cut off rate.

TRUE

FALSE

⇒ If a function

*f*(

*t*) is an odd, function, its Fourier series

contains only sine terms

contains only cosine terms

contains a constant and sine terms

contains a constant and cosine

⇒ Consider a 565 PLL with R

_{T}= 10 kΩ and C

_{T}= 0.01 μF. What is the output frequency of the VCO?

10 kHz

5 kHz

2.5 kHz

1.25 kHz

⇒ The modulation index of an AM wave is measured using a CRO. The waveform is as shown in figure, the modulation index is nea

0.43

0.3

0.23

0.17

⇒ The correct sequence of parts in klystron amplifier are

anode, catcher cavity, cathode, buncher cavity

cathode, buncher cavity, catcher cavity, cavity

anode, buncher cavity, catcher cavity, cathode

cathode, catcher cavity, anode, buncher cavity

⇒ The phase angle of a lag circuit is

between 0 and -90°

between 0 and +90°

90°

more than 90°

⇒ In figure what is the base current if V

_{BE}= 0

10 mA

9.3 mA

10 μA

9.3 μA

⇒ The signal flow graph of a system is shown in the given figure. The effect of disturbance T

_{D}can be reduce

increasing G

_{2}(s)

decreasing G

_{2}(s)

increasing G

_{1}(s)

decreasing G

_{1}(s)

⇒ Consider the following

- Maximum energy of electrons liberated photoelectrically is independent of light intensity
- Maximum energy of electrons liberated photoelectrically varies nonlinearly with frequency of incident light.

(1) is true and (2) is false

(1) and (2) both are true

(1) is false and (2) is true

(1) and (2) both are false

⇒ The control logic for a binary multiplier is specified by a states diagram. The state diagram has four states and two inputs. To implement it by the sequence register and decoder method.

two flip-flop & 2 x 4 decoder are needed

four flip-flop & 2 x 4 decoder are needed

two flip-flop & 3 x 9 decoder are needed

four flip-flop & 3 x 9 decoder are needed

⇒ TTL is used in electronic calculators.

TRUE

FALSE

⇒ Laplace transform method enables us to find the response in

steady state

transient state

both steady and transient state

transient state provided forcing functions do not exist

⇒ For a MOS capacitor fabricated on a P-type semiconductor, strong inversion occurs when

surface potential is equal to Fermi potential

surface Potential is greater than Fermi potential

surface potential is -

*ve*and equal to Fermi potential in magnitude

surface potential is +

*ve*and equal to twice the Fermi potential

⇒ In force current analogue, mechanical mobility is analogous to

impedance Z

admittance Y

reactance X

conductance G

⇒ The 54/74164 chip is an 8-bit serial-input-parallel-output shift register. The clock is 1 MHz. The time needed to shift a 8-bit binary number into the chip is

1 μs

2 μs

8 μs

16 μs

⇒ The radix of a hexadecimal system is

2

3

8

16

⇒ Read the following statements about 8085

`RAL`

instruction rotates`ACC`

contents left by 1 bit- When
`RAL`

instruction is executed once the binary number gets doubled `STC`

means set`CY`

to 1

1 and 2 only

1, 2 and 3 only

1, 2 and 4 only

1 and 4 only

⇒ When a lead acid cell discharges, the specific gravity of electrolyte increases.

TRUE

FALSE

⇒ The zeros of a minimum phase function lie on

imaginary axis

left half plane or origin

left half plane or imaginary axis

right half plane or origin

⇒ As regards ferromagnetic Curie temperature Q

*and paramagnetic curie temperature θ*

_{f}Q

*> θ*

_{f}θ > Q

_{f}θ equal to or less than Q

_{f}θ may be equal to less than or more Q

_{f}⇒ A lossless transmission line with air dielectric is 6 m long. what is the phase constant?

1p rad/m

2p rad/m

0.2p rad/m

0.1p rad/m

⇒ For an N bit ADC, the percentage resolution is [1/2

^{N}- 1)] 100.

TRUE

FALSE