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Q1. | Which of these are two state devices? |

A. | Lamp [Wrong Answer] |

B. | Punched card [Wrong Answer] |

C. | Magnetic tape [Wrong Answer] |

D. | All of the above [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 :**

⇒ While drawing vector diagram for a series circuit, the reference vector is

voltage

current

power

phase angle

⇒ In measuring resistance using voltmeter and ammeter, the resistances of voltmeter and ammeter also affect the accuracy of measurement.

TRUE

FALSE

⇒ GaAs has an energy gap 1.43 eV the optical cut off wavelength of GaAs would lie in the

visible region of the spectrum

infrared region of the spectrum

ultraviolet region of the spectrum

for ultraviolet region of the spectrum

⇒ The electron and hole concentration in a intrinsic semiconductor are

*n*

_{i}and P

_{i}respectively when doped with a P type material, these change to

*n*and P, respectively. Then

*n*+ P =

*n*

_{i}+ P

_{i}

*n*+

*n*

_{i}= P + P

_{i}

*n*P

_{i}=

*n*

_{i}P

*n*

_{P}=

*n*

_{i}P

_{i}

⇒

Match the following:

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

A. | R_{T} | 1. | A = D |

B. | R_{h} | 2. | h_{12} = h_{21} |

C. | S_{T} | 3. | AD - BC = 1 |

D. | S_{h} | 4. | h_{21} = - h_{21} |

5. | B = C | ||

6. | Δh = 1 |

A-3, B-4, C-1, D-6

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

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

A-5, B-4, C-1, D-6

⇒ In Laplace transform, multiplication by

*e*

^{-at}in time domain becomes

translation by

*a*in

*s*domain

translation by (-

*a*) in

*s*domain

multiplication by

*e*in s domain

^{-as}none of the above

⇒

Match the following:

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

A. | Multiplexer | 1. | Sequential memory |

B. | De-multiplexer | 2. | Converts decimal number to binary |

C. | Shift register | 3. | Data selector |

D. | Encoder | 4. | Routes single input to many outputs |

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

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

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

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

⇒ Compared to a

*p-n*junction with N

_{A}= N

_{D}= 10

^{14}/cm

^{3}, which one of the following statements is TRUE for a

*p-n*junction with N

_{A}= N

_{D}= 10

^{20}/cm

^{3}?

Reverse breakdown voltage is lower and depletion capacitance is lower

Reverse breakdown voltage is higher and depletion capacitance is lower

Reverse breakdown voltage is lower and depletion capacitance is higher

Reverse breakdown voltage is higher and depletion capacitance is higher

⇒ When signed numbers are used in binary arithmetic, which of the following has unique representation for zero?

Sign-magnitude

1's complement

2's complement

9's complement

⇒ The temperature coefficient of resistivity of semiconductors is

positive

negative

may be positive or negative

very low

⇒ Consider the following statements :

- Tellegen's theorem is applicable to any lumped networks.
- The reciprocity theorem is applicable to linear bilateral networks.
- Thevenin's theorem is applicable to two- terminal linear active networks.
- Norton's theorem is applicable to two-terminal linear active networks.

1, 2, and 3

1, 2 and 4

1, 2, 3 and 4

3 and 4

⇒ Y = A + A B is the same as

Y = AB

Y = A + B

Y = A + B

Y = A + B

⇒ A class A transformer coupled power amplifier is to deliver 10 W output. The power rating of transistor should not be less than

5 W

10 W

20 W

40 W

⇒ Digital technologies being used now-a-days are

DTL and EMOS

TTL, ECL, CMOS and RTL

TTL, ECL and CMOS

TTL, ECL. CMOS and DTL

⇒ The switch in the circuit shown was on position

*a*for a long time, and is moved to position

*b*at time

*t*= 0. The current

*i*(

*t*) for

*t*> 0 is give

0.2

*e*

^{-125t}

*u*(

*t*) mA

20

*e*

^{-1250t}

*u*(

*t*) mA

0.2

*e*

^{-1250t}

*u*(

*t*) mA

20

*e*

^{-1000t}

*u*(

*t*) mA

⇒ In 8085 microprocessor, an interrupt service request is serviced

immediately on receipt of request

after the execution of the current instruction is completed

at the end of the current machine cycle

none

⇒ The polar plot of G(

*j*ω) = 1/

*j*ω is

positive imaginary axis

positive real axis

negative imaginary axis

negative real axis

⇒ Gain of an antenna with a circular aperture of diameter 4 meter at frequency of 10 GHz, with directivity 60

60

100

30

90

⇒ An

*m*derived low pass filter has

*f*

_{c}= 1000 Hz,

*f*

_{∞}= 1250 Hz and

*m*= 0.6. If

*m*is increased, then

both

*f*

_{c}and

*f*

_{∞}will increase

both

*f*

_{c}and

*f*

_{∞}will decrease

*f*

_{c}will remain constant but

*f*

_{∞}will decrease

*f*

_{c}will remain constant but

*f*

_{∞}will increase

⇒ If D is diameter of circular waveguide the cutoff wave-length for TE

_{11}mode is equal to

1.706 D

2.11 D

0.82 D

0.41 D

⇒

**Assertion (A):** Maxwell bridge is for measuring inductance of medium magnitude.

**Reason (R):** In Maxwell's bridge the unknown inductance is measured by comparing it with a capacitance.

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

⇒ For making a capacitor it is better to have a dielectric having

high permittivity

low permittivity

permittivity same as that of air

permittivity which is neither high nor low

⇒ In a microwave coaxial cable the inner conductor radius is

*a*and inner radius of outside conductor is

*b*. For TE

_{11}mode the cut off wavelength is about

*a*+

*b*

p(

*a*+

*b*)

p

*a*

p

*b*

⇒ If X(

*z*) = (1 - a

*z*

^{-1}), and |a| < |

*z*|, the initial value

*x*

_{0}is

1

0

2

∞

⇒ A CE amplifier has

*r*

_{e}= 6 Ω, β = 100 and a = 0.98. The input impedance is

6 Ω

100 Ω

600 Ω

98 Ω

⇒ Which of the following is true?

During addition if the carry into and carry out of the sign bit do not match then an overflow has occurred

During addition if the carry into and carry out of the sign bit don't match then an overflow or underflow has occurred

During addition if the carry into and carry out of the sign bit match then an overflow or underflow has occurred

During addition if the carry into and carry out of the sign bit match then an overflow has occurred

⇒ In TE

_{10}mode of rectangular waveguide

there is one half sine wave variation along

*x*direction and one along

*y*direction

there is one half sine wave variation along

*y*direction and one along

*x*direction

there is one full sine wave variation along

*x*direction and one along

*y*direction

none of the above

⇒ When cells having different emfs are connected in parallel, a circulating current flows.

TRUE

FALSE

⇒ Consider the following instruments

- Tangent galvanometer
- Rayleigh current balance
- Household energy meter
- Hot wire ammeter

1, 2 and 3

1, 2 and 4

1 and 2

2, 3 and 4

⇒ Full duplex operation-permits transmission in both directions at the same time.

TRUE

FALSE