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Q1. | Each of two cascaded stages has a voltage gain of 30. The overall gain is |

A. | 3 [Wrong Answer] |

B. | 9 [Wrong Answer] |

C. | 30 [Wrong Answer] |

D. | 900 [Correct Answer] |

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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 :**

⇒ As compared to 17.34° antenna, the total increase in the signal relayed by 4.5° antenna of INTELSAT-IV is

14.85

220

78

3.85

⇒

**Assertion (A):** The sign and magnitude of displacement can be measured by an LVDT.

**Reason (R):** LVDT is based on the principle of mutual inductance.

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

⇒ The drain characteristics of JFET in operating region, are

inclined upwards

almost flat

inclined downwards

inclined upwards or downwards

⇒ In the following non planar graph number of independent loop equations

8

12

7

5

⇒ The material which has zero temperature coefficient of resistance is

manganin

porcelain

carbon

aluminium

⇒ A limiter circuit can be built using a diode and resistance.

TRUE

FALSE

⇒

**Assertion (A):** In an intrinsic semiconductor J = (μ_{n} x μ_{p})*en*_{i}.

**Reason (R):** Intrinsic charge concentration *n*_{i} at temperature T is given by *n*_{i}^{2} = A_{0} T^{3} *e*^{-EG0/kT}.

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 but R is false

A is false but R is true

⇒ A dc network has an open circuit voltage of 5 V. When its terminals are short circuited a current of 5 A flows through the short circuit. If the short circuit is removed and a resistance of 1.5 Ω is connected across its terminals, the current will be

0.0416666666666667

0.0833333333333333

2.5 A

0.208333333333333

⇒ If each frequency component of

*f*(

*t*) is shifted by p/2, the resulting signal is

Hilbert transform of

*f*(

*t*)

Inverse Hilbert transform of

*f*(

*t*)

Laplace transform of

*f*(

*t*)

Fourier transform of

*f*(

*t*)

⇒ The depletion layer in a reverse biased

*p*-

*n*junction is due to the presence of

electrons

holes

both electrons and holes

immobile ions

⇒ Which of the following statement is false?

A stationary process is always a ergodic process

A ergodic process is always a stationary random process

It is possible to have a stationary random

None of the above

⇒ A memoryless source emits

*n*symbols each with a probability

*p*. The entropy of the source as a function of

*n*

increases as log

*n*

decreases as log (1/

*n*)

increases as

*n*

increases as

*n*log

*n*

⇒ A parametric amplifier uses

non linear resistance

non linear reactance

either (a) or (b)

neither (a) nor (b)

⇒

Match the following:

List I (Functional components) | List II (Device) | ||
---|---|---|---|

A. | Error detector | 1. | Three phase FHP Induction motor |

B. | Servo motor | 2. | Synchro transmitter and control transformer |

C. | Amplifier | 3. | Tacho generator |

D. | Feed back | 4. | Armature controlled FHP dc motor |

5. | Amplidyne |

A-2, B-4, C-1, D-5

A-4, B-2, C-5, D-3

A-2, B-4, C-5, D-3

A-1, B-2, C-3, D-5

⇒ The moving iron instruments are generally repulsion type.

TRUE

FALSE

⇒ What is the result for expression (map metho

A + D + BC

A + D

A D + B C

A + D + BC

⇒ The magnitude response of a normalised Butterworth low pass filter is

linear starting with value of unity at zero frequency and 0.707 at cut off frequency

non linear all through but with values of unity at zero frequency and 0.707 at cut off frequency

linear upto cut off frequency and nonlinear thereafter

nonlinear upto cut off frequency and linear thereafter

⇒ Consider the following statements regarding the properties of an R-L-C series circuit under resonance:

- Current in the circuit is in phase with applied voltage
- Voltage drop across capacitor C and inductance L are equal in magnitude.
- Voltage across the capacitor is equal in magnitude to the applied voltage.
- Current in the circuit is maximum.

1 only

1, 2 and 4

2 and 4

1, 3 and 4

⇒ A reactance function

has a pole at origin

has a zero at origin

may have a pole or zero at origin

has a pole or zero at origin and a pole or zero at infinity

⇒ The Z inverse of the given Z transfor

Unit step

Unit ramp

Unit impulse

Unit parabola

⇒ The Laplace transform of impulse δ(

*t*) is

1

1/

*s*

*s*

1/

*s*

^{2}

⇒ The signal in 8086 are in minimum mode when

MN / Mx pin is tied to V

_{cc}

MN / Mx pin is grounded

MN / MX pin is left open

none of the above

⇒ Initially the number decimal 8 is stored. If instruction

`RAL`

is executed twice, the final number stored will bedecimals 8

decimal 16

decimal 32

decimal 2

⇒ The figures shows the symbo

p channel depletion MOSFET

p channel enhancement MOSFET

complementary MOSFET

p channel JFET

⇒ Which of the following can be accessed only sequentially?

Floppy disk

Hard disk

Magnetic tape

ROM

⇒

Match the following:

List I (Modulation ) | List II (Modulation Index) | ||
---|---|---|---|

A. | DSBFC | 1. | μ > 1 |

B. | DSBSC | 2. | μ > 0 |

C. | SSB | 3. | ∞ |

4. | μ, any value |

A-2, B-2, C-3

A-1, B-3, C-3

A-4, B-2, C-1

A-2, B-3, C-1

⇒ Which of the following is a circularly polarized antenna?

Horn

Dipole

Helical

Pyramidal

⇒ An electrostatic voltmeter is suitable for

low voltage at high frequency

high voltage

low voltage at low frequency

all ac and dc voltages

⇒ If load impedance Z

_{L}>> Z

_{0}, then

Z

_{0}= Z

_{L}(VSWR)

Z

_{L}= Z

_{0}(VSWR)

Z

_{L}= Z

_{0}(VSWR - 1)

Z

_{L}= Z

_{0}VSWR

⇒ In a communication system, noise is most likely to affect the signal

at the receiver

at the transmitter

at the information source

in the channel