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Q1. | For type 0 system the starting point (i.e. ω = 0) of polar plot is finite and is on positive real axis. |

A. | TRUE [Correct Answer] |

B. | FALSE [Wrong Answer] |

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

⇒ The rule that resistivity of conductors can be separated into two parts viz. temperature independent and temperature dependent is known as

Matthiessen's rule

Debye rule

Curie rule

Onne's rule

⇒ In a reflex klystron oscillator, repeller electrode is at

low positive potential

high positive potential

negative potential

zero potential

⇒ For a binary half subtractor having two inputs

*A*and

*B*the correct sets of logical expressions for the outputs

*D*(

*A*-

*B*) and

*X*= Borrow are

D = AB + AB, X = AB

D = AB AB, X = AB

D = AB + AB, X = AB

D = AB + A B, X = AB

⇒ Which of the following is used as a passive component in electronic circuits?

Tunnel diode

Capacitor

Transistor

Vacuum tube

⇒ The pole zero plot in the given figure is

non-minimum phase function

minimum phase function

all pass function

either (a) or (b)

⇒ A sequential multiplexer is connected as shown in figure. Each time the multiplexer receives the clock, it switches to the next channel from 6 to 1. If the input signals a

8 kHz

50 kHz

20 kHz

10 kHz

⇒ Two voltages are -5 V and -10 V. In positive logic

-5 V is 1 and -10 V is 0

-10 V is 1 and -5 V is 0

-5 V is 1 in some circuits and 0 in others

-10 V is 1 in some circuits and 0 in others

⇒ A series RLC circuit is at resonance at 200 Hz. If capacitance is increased to four times, the circuit will be in resonance at

200 Hz

400 Hz

100 Hz

800 Hz

⇒ Programmable logic array uses

RAM matrices

ROMs matrices

PROM matrices

Silo memory

⇒ For a transistor the normal collector voltage is 12 V. If actually it is found to be + 28 V, the trouble could be

R

_{L}is open

R

_{E}is open

C

_{E}is shorted

C

_{E}is open

⇒ Nichols chart consists of M and N locii in log magnitude versus phase diagram.

TRUE

FALSE

⇒ If the variance σ

_{x}

^{2}of

*d*(

*n*) =

*x*(

*n*) -

*x*(

*n*- 1) is one-tenth the variance σ

_{x}

^{2}of a stationary zero mean discrete time signal

*x*(

*n*), then the normalized autocorrelation function R

_{xx}(

*x*)/σ

_{x}

^{2}at

*k*= 1 is

0.95

0.9

0.1

0.05

⇒ In the wheatstone bridge in figure, each resistance is increased by 0.05%. The value of v

_{0}will

50 mV

5 mV

0.1 mV

zero

⇒ In a vacuum triode μ =

*r*

_{p}

*g*

_{m}.

TRUE

FALSE

⇒ In electronic voltmeters the measuring device is a

moving coil instrument

moving iron instrument

dynamometer instrument

none of the above

⇒ In TTL the transistors are driven into and out of saturation.

TRUE

FALSE

⇒

Match the following:

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

A. | Copper | 1. | produces discrete energy level just above valence band |

B. | Rubber | 2. | produces discrete energy level just below conduction band |

C. | Antimony | 3. | large forbidden gap |

D. | Boron | 4. | valence and conduction bands overlap |

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

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

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

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

⇒ The units for electric dipole moment are

coulombs

colomb-metre

coulomb/metre

coulomb/m

^{2}

⇒ A loudspeaker transformer has a turns ratio of 20 : 1. The speaker impedance is 20Ω. Primary impedance of transformer is

10 K

8 K

20 K

0.5 K

⇒ Lowest noise can be expected in case of

carbon composition resistors

carbon film resistors

tin oxide resistors

metal film resistors

⇒ Assuming V

_{CE sat}= 0.2 V and β = 50, the minimum base current (I

_{B}) required to drive the transistor in the given figure to saturatio

56 μA

140 μA

60 μA

3 μA

⇒ A

*Q*meter uses the principle of

variation of self inductance

variation of mutual inductance

series resonance

none of the above

⇒ In figure, the reading of wattmeter will be proportio

V I cos θ

3 VI cos θ

3 VI sin θ

V I sin θ

⇒ In a multi-processor configuration two coprocessors are connected to host 8086 processor. The instruction sets of the two coprocessors

must be same

may overlap

must be disjoint

must be the same as that of host

⇒ At millimeter wavelength the favoured mode in circular wave guide is

TE

_{01}

TE

_{11}

TE

_{20}

TE

_{21 }

⇒ In a tungsten filament lamp

the current at the instant of switching is less than operating current

the current at the instant of switching is more than operating current

the current at the instant of switching is equal to operating current

the current at the instant of switching may be less than or equal to operating current

⇒

**Assertion (A):** Impatt diode can be used in both amplifiers and oscillators.

**Reason (R):** Impatt diode has a low resistance.

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

A is wrong but R is correct

⇒ For a second order instrument, the optimum range of ξ (damping ratio), which gives good frequency response over a wide range of frequencies is

0.5 to 0.6

0.6 to 0.7

0.7 to 0.8

0.8 to 1.0

⇒ In a single phase half wave ac regulator feeding a resistive load, the rms load current

is always positive

may be positive or negative

is always negative

can be even zero

⇒ In low power factor wattmeter, the pressure coil is connected

to the supply side of current coil

to the load side of current coil

in either (a) or (b)

across the mains