The smaller angle (in degrees) between the planes x + y + z =1 and 2x – y + 2z = 0 is

Correct answer is '54.0 to 55.0'. Can you explain this answer?

Tanishka Aggarwal answered • 4 days ago

x + y + 2 = 1

2x – y + 2z = 0

We have angle between two planes

2x – y + 2z = 0

We have angle between two planes

The Fourier transform of the decaying exponential pulse shown in figure is

- a)
- b)
- c)
- d)

Correct answer is option 'A'. Can you explain this answer?

Sanjukta Pal answered • 4 days ago

The given signal can be represented as

(Time constant,

∴ Fourier transform of x(t) is

(Time constant,

∴ Fourier transform of x(t) is

Abhiranjan Kumar asked • 3 hours ago

Radiations of two photons energies, twice and five times the work function of metal are incident successively on the metal surface. The ratio of the maximum velocity of photoelectrons emitted in the two cases will be

- a)1 : 1
- b)1 : 2
- c)1 : 3
- d)1 : 4

Correct answer is option 'B'. Can you explain this answer?

A power amplifier delivers 250 watt output at 50% efficiency. If ambient temp. is 25°C and maxm allowable junction temp. is 150°C, then what is value of Maximum thermal resistance which can be tolerated.

- a)1°C/mW
- b)1°C/W
- c)2°C/W
- d)2°C/mW

Correct answer is option 'B'. Can you explain this answer?

Shrinjini answered • 4 days ago

Ratnesh Kumar asked • 11 hours ago

The maximum electric field in reverse-biased silicon pn junction is E_{max} = 3 x 10^{5} V /cm. The doping concentration are N_{d }= 4 x10^{16 }cm^{-3} and N_{a }= 4 x 10^{17 }cm^{-3}. The magnitude of the reverse bias voltage is

- a)3.6 V
- b)9.8 V
- c)7.2 V
- d)12.3 V

Correct answer is option 'C'. Can you explain this answer?

Spiritiya Fdo asked • 12 hours ago

A silicon pn junction with doping profile of N_{a } =10^{16 } cm^{-3} and N_{d} =10 ^{15} cm^{-3} has a cross sectional area of 10^{-2} cm^{2}. The length of the p - region is 2 mm and length of the n - region is 1 mm. The approximately series resistance of the diode is

- a)62Î©
- b)43Î©
- c)72Î©
- d)81Î©

Correct answer is option 'C'. Can you explain this answer?

Yasu Vali asked • 13 hours ago

Choose the grammatically correct sentence

- a)She is smart enough to take care of herself in Bombay
- b)She is enough smart to take care of oneself in Bombay
- c)She is enough smart to take care of herself in Bombay
- d)She is smart enough to take care of oneself in Bombay

Correct answer is option 'A'. Can you explain this answer?

Cpallavireddy1999 Pallavi asked • 16 hours ago

The p-type substrate in a monolithic circuit should be connected to

- a)d.c. ground point
- b)must be floating
- c)The most negative voltage available in the circuit
- d)The most positive voltage available in the circuit

Correct answer is option 'C'. Can you explain this answer?

Geet Naman asked • 20 hours ago

The frequency response of a microphone means

- a)bandwidth of frequencies having output with in ï¿½ 1 dB of the output at 1000 Hz
- b)bandwidth of frequencies having output with in ï¿½ 3 dB of the output at 1000 Hz
- c)bandwidth of frequencies having output with in ï¿½ 1 dB of the output at 500 Hz
- d)bandwidth of frequencies having output with in ï¿½ 3 dB of the output at 500 Hz

Correct answer is option 'A'. Can you explain this answer?

Tresa Sunny asked • 23 hours ago

Two p^{+} n silicon junction is reverse biased at V_{R} = 5 V. The impurity doping concentration in junction A are N_{a} = 10^{18 }cm^{-3}and N_{d} = 10 ^{15} cm^{-3}, and those in junction B are N_{a} = 10^{18} cm^{-3 } and N_{d }= 10^{16} cm^{-3}. The ratio of the space charge width is

- a)4.36
- b)9.8
- c)19
- d)3.13

Correct answer is 'D'. Can you explain this answer?

Anshu asked • yesterday

The Eddy current damping is not used in electrodynamometer type instrument as

- a)Eddy current losses are higher
- b)Mass of moving system

becomes higher - c)The magnetic field produced by

eddy currents introduce error - d)Operating field is weak due to

air cored.

Correct answer is option 'D'. Can you explain this answer?

Kranthi Kiran Reddy Guri asked • yesterday

Consider the following statements regarding fermi level in an extrinsic semiconductor.

1. Fermi level moves towards the centre of energy band gap as we increase the temperature.

2. In n-type semiconductor the fermi level moves towards the vallence band as we increases the doping concentration.

3. In p-type semiconductor the fermi level moves towards the conduction band as we increases the doping concentration.

Which of the following is/are correct?

- a)1,2,3
- b)1, 3
- c)1 only
- d)2, 3

Correct answer is option 'B'. Can you explain this answer?

Naga Subrahmanyam asked • yesterday

Consider the system shown in figure . The average value of m(t) is zero and maximum value of

|m(t)| is M. The square-law device is defined by y(t) = 4x(t) +10 x(t).

|m(t)| is M. The square-law device is defined by y(t) = 4x(t) +10 x(t).

Let W be the bandwidth of message signal m(t). AM signal would be recovered if

- a)f
_{c}> W - b)f
_{c}> 2W - c)f
_{c}≥ 3W - d)f
_{c}> 4W

Correct answer is option 'C'. Can you explain this answer?

Rafiq Ahmed asked • yesterday

In the circuit shown below, the voltage source has been connected for a long time enough for steady state condition to be reached. At time t=0, switch S is opened. Then open circuit voltage across AB is

- a)V.e
^{- (R / L)} - b)V + V.e
^{-R/L} - c)V
- d)o

Correct answer is option 'C'. Can you explain this answer?

Naveen Tamatam asked • yesterday

The following statements are related to a tunnel diode

1. Fermi level in n-side lies inside valence band

2. Excellent conduction is possible in reverse bias

3. In reverse bias negative resistance is exhibited

4. V_{P} > V_{V}

5. It can act as oscillator

6. The magnitude of lP is decided by impurity concentration and Junction area

7. Ge tunnel diode is used for commercial applications

Which of the above statements are false?

Parvez M Sani Sani asked • yesterday

Arrange in ascending order of cut off

frequency (f_{c}) of the waveguides in the following modes as

- a)TE
_{10}< TE_{20}< TE_{01}< TM_{11} - b)TE
_{10}< TE_{o1}< TE_{20}< TM_{11} - c)TE
_{11}< TE_{01}< TE_{20}< TM_{10} - d)TE
_{01}< TE_{10}< TE_{20}< TM_{11}

Correct answer is option 'A'. Can you explain this answer?

Rajlaxmi Prajapati asked • yesterday

A number P represented in signed binary 2’s complement form is 1001101. Another number Q_{1} represented in signed binary 2’s complement form is 11010111. If Q is subtracted from P, the result expressed in signed binary 2’s complement form

- a)10111
- b)10011
- c)10110
- d)10010

Correct answer is option 'C'. Can you explain this answer?

Mounika Velaga asked • yesterday

The doping concentrations of a silicon pn junction are N_{d =} 10^{16} cm^{-3} and N_{a }= 8 x 10^{15} cm^{-3}. The cross-sectional area is 10^{-3} cm^{2}. The minority carrier lifetimes are τ_{n0} = 1μs and τ_{p0 }= 0.1μs. The minority carrier diffusion coefficients are D_{n} = 35 cm^{2}/ s and D_{p} = 10 cm^{2}/ s . The total number of excess electron in the p - region, if applied forward bias is V_{a} = 0.5 V, is

Shahbaaz Ahmed asked • yesterday

For a BJT, CE-mode, Base to emitter capacitance (Cπ) is 10 times the collector to base capacitance (Cµ). If transistor is biased at quiescent collector current ICQ = 1 mA, and its short circuit unity gain frequency is 0.909 M rad/sec, then the value of Cπ is _______ nF.

Correct answer is '44'. Can you explain this answer?

Ayushi Sharma asked • 2 days ago

The inductance of a certain moving iron ammeter is given as L = 5 + 2θ - θ^{2}μH where deflection θ is in

radians from zero position. If spring constant is 20 μNm/rad. The deflection for a current of 1A is

radians from zero position. If spring constant is 20 μNm/rad. The deflection for a current of 1A is

- a)1/21 rad
- b)1/15 rad
- c)1/3 rad
- d)1/8 rad

Correct answer is option 'A'. Can you explain this answer?

Astha Jain asked • 2 days ago

Consider the following reasons for using antenna coupler

- To prevent illegal radiation of spurious frequencies
- To tune out reactive components of antenna impedance
- To have correct value of load impedance for transmitter.

- a)1, 2, 3
- b)1, 2
- c)1 only
- d)2, 3

Correct answer is option 'A'. Can you explain this answer?

Anumala Krishna Vamsi asked • 2 days ago

A binary symmetric channel (BSC) has a transition probability of 1/8. If the

binary symbol X is such that P(X = 0) = 9/10, then the probability of error for

an optimum receiver will be

binary symbol X is such that P(X = 0) = 9/10, then the probability of error for

an optimum receiver will be

- a)a
- b)b
- c)c
- d)d

Correct answer is option 'A'. Can you explain this answer?

Mahithaa asked • 2 days ago

Consider the following statements associated with data representation by 1’s and 2‘s complements:

1. The 2’s complement system requires only one arithmetic operation.

2. The 1 ’s complement system requires two arithmetic operations.

3. The 1 's complement is often used in logical manipulations for inversion operation.

4. The 2 ’s complement is used only for arithmetic applications.

1. The 2’s complement system requires only one arithmetic operation.

2. The 1 ’s complement system requires two arithmetic operations.

3. The 1 's complement is often used in logical manipulations for inversion operation.

4. The 2 ’s complement is used only for arithmetic applications.

Which of the statements given above are correct?

- a)1 , 2 , 3 and 4
- b)1 ,3 and 4
- c)2, 3 and 4
- d)1,2 and 3

Correct answer is option 'A'. Can you explain this answer?

Manjeet Verma asked • 2 days ago

If wave form is given only for I period then

- a)an even function with half wave symmetry.
- b)An odd function with half wave symmetry.
- c)an even function with no half wave symmetry.
- d)An odd function with no half wave symmetry.

Correct answer is option 'B'. Can you explain this answer?

Ramya Srivalli asked • 2 days ago

In an unbiased P-N Junction zero current implies that

- a)The potential biases has disappeared
- b)No. of holes diffusing from P-side to N-side equals the no. of electrons diffusing from N-side to P-side
- c)Total current crossing Junction from P-side to N-side equals the total current crossing Junction from N-side top-side
- d)No carriers cross the Junction

Correct answer is option 'C'. Can you explain this answer?

Vikas Pandey asked • 3 days ago

The PSD and the power of a signal *g*(*t*) are respectively S_{g}(Ï‰) and P_{g}, the PSD and the power of signal *a*.*g*(*t*) are respectively

- a)
*a*S^{2}_{g}(Ï‰) and*a*^{2}P_{g} - b)
*a*S_{g}^{2}(Ï‰) and*a*P_{g} - c)
*a*S_{g}(Ï‰) and*a*^{2}P_{g} - d)
*a*S_{g}(Ï‰) and*a*P_{g}

Correct answer is option 'A'. Can you explain this answer?

Harmish Ramoliya asked • 3 days ago

An insurance company insured 2000 cyclists, 4000 scooter drivers and 6000 motorbike drivers. The probability of an accident involving a cyclist, scooter driver and a motorbike driver are 0.01, 0.03 and 0.15 respectively. One of the insured persons meets with an accident. What is the probability that he is a scooter driver?

- a)0.5
- b)0.6
- c)0.7
- d)None of these

Correct answer is option 'D'. Can you explain this answer?

Karne Prabha asked • 3 days ago

Unilateral Laplace Transform is applicable for the determination of linear constant coefficient differential equations with ________

- a)Zero initial condition
- b)Non-zero initial condition
- c)Zero final condition
- d)Non-zero final condition

Correct answer is option 'B'. Can you explain this answer?

Prasad Depp asked • 4 days ago

In each question below are given two statements followed by two conclusions numbered I and II. You have to take the given two statements to be true even if they seem to be at variance from commonly known facts. Read the conclusions and then decide which of the given conclusions logically follows from the two given statements, disregarding commonly known facts.

Q.

Statements : All planets are moons All moons are stars.

Conclusions : I. All moon are planets II. All planets are stars

Conclusions : I. All moon are planets II. All planets are stars

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