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Q1. | Resistivity of semiconductors is around 100 Ω-m. |

A. | TRUE [Wrong Answer] |

B. | FALSE [Correct Answer] |

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

⇒

Match the following:

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

A. | C | 1. | 7 eV |

B. | Si | 2. | 1.15 eV |

C. | Ge | 3. | 0.75 eV |

D. | Sn | 4. | 0.1 eV |

E. | Pb | 5. | 0 eV |

A-2, B-3, C-4, D-5, E-1

A-1, B-2, C-3, D-4, E-5

A-3, B-1, C-2, D-5, E-4

A-4, B-5, C-1, D-2, E-3

⇒ If a function Z(

*s*) has a pole at infinity, then

the degrees of numerator and denominator are equal

the degree of numerator is one higher than that of denominator

the degree of denominator is one higher than that of numerator

the difference between the degrees of numerator and denominator is 0 or 1

⇒ If the connection of two-port is such that the transmission matrix of the overall network is the product of the transmission matrices of the individual networks, what type of connection is it?

Series connection

Cascade connection

Parallel connection

None of the above

⇒ A balanced modulator circuit uses

two identical diodes with same V-I characteristics

two triodes with different V-I characteristics

two diodes with different V-I characteristics

a diode and a triode

⇒ An RLC series circuit has R = 8 Ω, X

_{L}= 8 Ω and X

_{C}= 8 Ω Its impedance is

8 +

*j*16 Ω

8 +

*j*8 Ω

8 Ω

24 Ω

⇒ Power Point is a presentation software.

TRUE

FALSE

⇒ In figure, Z

_{a}= 100∠50°, Z

_{b}= 300∠-90° and Z

_{c}= 200∠0°. For balanced condition, Z

_{d}will

600∠ - 40°

600∠140°

600∠ - 140°

150∠140°

⇒ When two 16-input multiplexers drive a 2-input MUX, what is the result?

2-input MUX

4-input MUX

16-input MUX

32 input MUX

⇒ Schering bridge is used to measure

capacitance and dielectric loss

inductance

resistance

mutual inductance

⇒ Binary 1111 when subtracted from binary 11111 is

101110

10110

10000

100010

⇒ In solid insulator materials having only one kind of atom, the types of polarization which exist are

electronic only

electronic and ionic

electronic, ionic and permanent

electronic and permanent

⇒ A Weston frequency meter is

moving coil instrument

moving iron instrument

dynamometer instrument

induction instrument

⇒ Which of the following statement is

*incorrect*?

Curl of vector potential is magnetic field density

Electric charges in motion produce magnetic field

Electric charges at rest produce electrostatic field

None of the above

⇒ For the design of a sequential circuit having 9 states, minimum number of memory elements required is

3

4

5

9

⇒ As temperature increases, the temperature coefficient of metals increases.

TRUE

FALSE

⇒ The sum of positive real function is positive real.

TRUE

FALSE

⇒ DeMorgan's first theorem shows the equivalence of

OR gate and Exclusive OR gate

NOR gate and Bubbled AND gate

NOR gate and NAND gate

NAND gate and NOT gate

⇒

**Assertion (A):** The number of basic loops is equal to number of links.

**Reason (R):** The graph theory helps in choosing independent variables in circuit analysis.

Both A and R are true and R is correct explanation of A

Both A and R are true and R is not the correct explanation of A

A is true but R is false

A is false but R is true

⇒ A disadvantage of microstrip line as the connections of compared to strip line is that former

do not lend themselves to printed circuit

are more likely to radiate

are bulky

are more expensive and complex

⇒ FF

_{16}when converted to 8421BCD =

0000 0101 0101

0010 0101 0101

1111 0101 0101

1000 0101 0101

⇒ The shape of torque-speed curve of a two phase servo- motor mostly depends on

ratio of rotor reactance to rotor resistance

ratio of stator reactance to rotor resistance

ratio of rotor reactance to rotor resistance and also the ratio of stator reactance to stator resistance

magnitude of stator voltages

⇒ Transient current in a loss free LC circuit when excited from an ac source is an __________ sine wave.

undamped

over damped

under damped

critically damped

⇒ For a random variable

*x*following the probability density function, p(

*x*), shown in figure, the mean and the variance are respective

1/2 and 2/3

1 and 4/3

1 and 2/3

2 and 4/3

⇒ The JFET in the circuit shown in figure has an I

_{DSS}= 10 mA and V

_{p}= -5V. The value of the resistance R

_{s}for a drain current I

_{DS}= 6.4 m

156 Ω

470 Ω

560 Ω

1 kΩ

⇒ The range of visible light is

300 to 2000 Å

200 - 4000 Å

4000 to 7700 Å

more than 10000 Å

⇒ A bridge rectifier circuit has input of 50 Hz frequency. The load resistance is R

_{L}and filter capacitance is C. For good output wave shape, the time constant R

_{L}C should be at least equal to

10 ms

20 ms

50 ms

100 ms

⇒ With respect to the Miller integrator sweep shown below, the sweep rate wil

2

4

1.5

2.5

⇒ Heat in calories = I

^{2}R

*t*/4.186.

TRUE

FALSE

⇒ In a 4 bit parallel in parallel out shift register A = 1, B = 1, C = 0, D = 1. The data output after 3 clock pulses is

1101

1001

101

1

⇒ The intrinsic resistivity of silicon at 300 K is about

1 Ω-cm

400 Ω-cm

10000 Ω-cm

230000 Ω-cm