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Q1. | The ideal voltmeter V of figure will read __________ v |

A. | 0 [Wrong Answer] |

B. | 10 [Correct Answer] |

C. | 5 [Wrong Answer] |

D. | 1 [Wrong Answer] |

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

⇒ The disadvantage of transformer coupling in amplifier is

cost of transformer at audio frequencies

size of transformer at audio frequencies

size of transformer at radio frequencies

cost and size of transformer at audio frequencies

⇒ In

*n*type semiconductor, the free electron concentration

is nearly equal to density of donor atoms

is much greater than density of donor atoms

is much less than density of donor atoms

may be equal to or more or less than density of donor atoms

⇒ The device 'one shot' has

two stable states

one stable state

either 1 or 2 stable states

no stable state

⇒ In shot noise

the current rises around mean value

the current rises to peak value, decreases to zero and then again rises

the current may become negative

the current is always less than the mean value

⇒ In a material, the Fermi level is located between the centre of the forbidden band and the conduction band. Then what is that material?

A

*p*-type semiconductor

An

*n*-type semiconductor

An intrinsic semiconductor

An insulator

⇒ A two branch parallel tuned circuit has a coil of resistance 100 Ω and inductance 0.005 H in one branch and 10

*n*F capacitor in the second branch. At resonance frequency, the dynamic resistance is

1 Ω

10 Ω

100 Ω

more than 100 Ω

⇒ In a sequential circuit the output at any instant depends on

present inputs only

past inputs only

past outputs only

past output and present input

⇒ Troposphere is the upper part of the Earth's atmosphere which absorbs large quantities of Sun's radiations.

TRUE

FALSE

⇒ Thermistor is used in

temperature measurement

temperature control

high temperature alarm circuits of devices

all of the above

⇒ In an op-amp a virtual ground is a ground for

voltage only

current only

both voltage and current

neither voltage nor current

⇒ The sum of two or more arbitrary sinusoidal is

always periodic

periodic under certain conditions

never periodic

periodic only if all the sinusoidals are identical in frequency and phase

⇒ An average responding rectifier type electronic voltmeter has its scale calibrated in terms of rms value of sine wave. If 100 V peak value square wave is fed to this voltmeter, the reading will be

111 V

100 V

90.9 V

70.7 V

⇒ The power dissipated in 4 Ω resistance in figur

64 W

32 W

16 W

8 W

⇒ To ensure that only dominant TE

_{10}mode propagates in a rectangular waveguide, the operating frequency

must be more than cutoff frequency of

*TE*

_{10}mode

must be less than cutoff frequency of

*TE*

_{20}mode

must be more than cutoff frequency of

*TE*

_{10}mode and less than cutoff frequency of TE

_{20}mode

must be less than cutoff frequency of

*TE*

_{10}mode

⇒ Consider the following statements about Infix and Post fix notations in Pascal

- In Infix notation operators appear between the operands on which they operate.
- In Post fix notation operators appear after the operand.
- The Infix expression A + B - C + D will appear as AB + C - D + in post fix notation.

All

1 and 2 only

1 and 3 only

2 and 3 only

⇒ Each cell of a static RAM has

4 MOS transistors

4 MOS transistors and 2 capacitors

2 MOS transistors and two capacitors

1 MOS transistor and 1 capacitor

⇒ The dielectrics having only one kind of atoms are known as elemental dielectrics.

TRUE

FALSE

⇒ A longwave AM broadcast transmitter needs

very small carrier power

very large carrier power

small carrier power

large carrier power

⇒ For a given line voltage, four heating coils will produce maximum heat when connected

all in parallel

all in series

with two parallel pairs in series

one pair in parallel with the other two in series

⇒ A piece of copper and another piece of Germanium are cooled from 30°C to 80 K. The resistance of

copper decreases and germanium increases

both decreases

both increases

copper increases and germanium decreases

⇒ As compared to tuned radio frequency receivers which of the following is the advantage of using superheterodyne receivers?

High gain and better sensitivity

Better selectivity at high frequencies

Stability

Noise suppression

⇒ In floating point representation, mantissa is expressed in

excess 3 notation

gray code

excess 32 notation

2's complement

⇒ A system has its two poles on the negative real axis and one pair of poles lies on

*j*ω axis. The system is

stable

unstable

limitedly stable

either (a) or (c)

⇒ When transistor is used as a switch __________ is defined as the interval which elapses between the transition of input waveform and the time when to transition to 90% of I

_{c(sat)}.

storage time

fall time

turn-on time

turn-off time

⇒ If

*t*and

_{on}*t*are the turn on and turn off times of a thyristor, then

_{off}*t*and

_{on}*t*are almost equal

_{off}*t*>>

_{on}*t*

_{off}*t*>>

_{off}*t*

_{on}*t*is about twice

_{on}*t*

_{off}⇒ In which counter does the maximum frequency depend on the modulus?

Synchronous

Ripple

Both synchronous and ripple

Neither synchronous nor ripple

⇒ A radar has a maximum range of 120 km. The maximum allowable pulse repetition frequency for unambiguous reception is

1250

330

2500

8330

⇒ For the system in the given figure the root l

is on real axis between points

*s*= -1 and

*s*= -3.6

is on real axis between points

*s*= 0 and

*s*= -1

is on real axis between points

*s*= -3.6 and

*s*= ∞

is on real axis between points

*s*= 0 and

*s*= -3.6

⇒ EPROM can be

UVPROM

EEPROM

both UVPROM and EEPROM

none of the above

⇒ The counter shown in figure is built using 4 negative edge triggered toggle FFs. The FFs can be set synchronously when R = 0. The combinational logic required to realize a modulo 13 counte

F= Q

_{4}Q

_{3}Q

_{2}Q

_{1}

F= Q

_{4}+ Q

_{3}+ Q

_{2}+ Q

_{1}

F = Q

_{4}+ Q

_{3}+ Q

_{2}+ Q

_{1}

F = Q

_{4}Q

_{3}Q

_{2}Q

_{1}