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Q1. | Monostable multivibrator is called one-shot or single-shot circuit because it |

A. | can be used once [Wrong Answer] |

B. | can be used single and not with other circuits. [Wrong Answer] |

C. | always returns by itself to its single stable state [Correct Answer] |

D. | changes to quasistable for a fixed period of time upon receipt of triggering signal. [Wrong Answer] |

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

⇒ The complicated shapes in the polar plots are only due to time constants in the numerator of transfer functions.

TRUE

FALSE

⇒ Insertion of a dielectric material between the plates of an air capacitor

increases the capacitance

decreases capacitance

has no effect an capacitance

increases breakdown voltage

⇒ For a 4096 x 8 EPROM, the number of address lines is

14

12

10

8

⇒ The skin depth of copper is found to be 66 mm at 1 MHz at a certain temperature. At the same temperature and at 2 MHz, the skin depth would be approximately

47 μm

33 μm

92 μm

1.22 μm

⇒ Which of the following statements is correct?

In the magnetic circuit energy is needed continuously to maintain the flux

In the magnetic circuit energy is needed continuously to maintain the flux

The flow of current in the electric circuit involves discontinuous expedition of energy

The flow of current in the electric circuit requires energy for creating the current but not to maintain it

⇒ 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}

⇒ A balun should have

low SWR at both ports

high SWR at both ports

high SWR at input port and low SWR at output port

low SWR at input port and high SWR at output

⇒ Twelve 1 Ω resistance are used as edges to form a cube. The resistance between two diagonally opposite corners of the cube is

5/6 Ω

1 Ω

6/5 Ω

3/2 Ω

⇒ If average correlation between

*v*

_{1}(

*t*) and

*v*

_{2}(

*t*) is R

_{12}(

*t*) and average correlation between

*v*

_{2}(

*t*) and

*v*

_{1}(

*t*) is R

_{21}(

*t*) then

R

_{12}(t) = R

_{21}(t)

R

_{21}(t) = R

_{12}(t)

R

_{12}(t) = - R

_{21}(t)

none of these

⇒ When a semi-conductor is doped, its electrical conductivity

increases

decreases in the direct ratio of the doped material

decreases in the inverse ratio of the doped material

remains unaltered

⇒ Which of the following is not a proper FORTRAN expression?

B + A / C - D

(A + C) / (B + D)

B + * A / C

A ** (B + 2)

⇒ Wagner earthing device is used to eliminate error due to

electromagnetic coupling

electrostatic coupling

both electrostatic and electromagnetic coupling

either (a) or (b)

⇒ In floating point representation, the accuracy is

10 bit

9 bit

8 bit

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⇒ The standard deviation of a set of observations is the rms value of the deviation from the arithmetic mean.

TRUE

FALSE

⇒ If

*f*be the signal frequency and

_{s}*f*be the intermediate frequency then image frequency is given by

_{i}*f*+

_{s}*f*

_{i}*f*±

_{s}*f*

_{i}*f*± 2

_{s}*f*

_{i}*f*+ 2

_{s}*f*

_{i}⇒ Polarization is a measure of

dielectric constant per unit volume

voltage gradient to produce electrical breakdown

product of charge and distance

excess charge density

⇒ An RLC series circuit has R = 7.07 Ω, L = .707 H and C = 7.07 μF. At Half power frequencies the circuit impedance is likely to be

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10 Ω

14.14 Ω

20 Ω

⇒ In a dual converter operated in circulating current mode, the circulating current flows

when load current is zero

when load current is non-zero

even when load current is zero

none of the above

⇒ Wagner earthing device eliminates

all stray capacitance in the circuit

stray capacitances between components

stray capacitance between detector terminal and ground

mutual coupling between components

⇒ A CW transmitter radiates

modulated RF carrier

unmodulated RF carrier

both (a) and (b)

none of the above

⇒ Free electrons exist in

first band

second band

third band

conduction band

⇒ The circuit in figure(1) is replaced by that in figure(2). It remains same R

_{0}wil

zero

R

2R

4R

⇒ The depletion layer across a P

^{+}

*n*junction lies

mostly in the P

^{+}region

mostly in

*n*region

equally in both the P

^{+}and

*n*-region

entirely in the P

^{+}region

⇒ The efficiency of a direct radiating cone type loudspeaker is about

0.05

0.2

0.5

0.8

⇒ For the amplifier in figure, β = 800. The mid-band voltage gain V

_{0}/V

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⇒ Using 4-bit numbers (

*n*= 4) if

*k*= (0011)

_{2}how is

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(1011)

_{2}

(1101)

_{2}

(1100)

_{2}

(0101)

_{2}

⇒ 11011 in gray code = __________ .

10010

_{2}

11111

_{2}

11100

_{2}

10001

_{2}

⇒ Which of the following statements defines a full adder?

It adds two binary digits and produces their SUM and CARRY

It adds three inputs (two binary digits and a carry) and produces their SUM and CARRY

It has two inputs and two outputs

None of the above

⇒ If V

_{a1}, V

_{a2}, V

_{a0}are the symmetrical components of V

_{a}, then

V

_{a}= V

_{a1}+ V

_{a2}+ V

_{a0}

V

_{a}=

*a*

^{2}V

_{a1}+

*a*V

_{a2}+ V

_{a0}

V

_{a}=

*a*V

_{a1}+

*a*

^{2}V

_{a2}+ V

_{a0}

V

_{a}=

*a*V

_{a0}+

*a*

^{2}V

_{a1}+ V

_{a2}

⇒ Consider the following statements Timer 555 can be used as

- monostable multivibrator
- bistable multivibrator
- astable multivibrator

1 and 2

1 and 3

2 and 3

1, 2, 3