Users Also Read

MCQ's Search Engine

Electrical Engineering

Mechanical Engineering

Civil Engineering

Automobile Engineering

Chemical Engineering

Computer Engineering

Electronics Engineering

Medical Science Engg

Q1. | For a given value (n) of principle quantum number, the number of possible electronic states are |

A. | n [Wrong Answer] |

B. | n^{2} [Correct Answer] |

C. | n^{3} [Wrong Answer] |

D. | n [Wrong Answer] |

View Answer
Explanation:-
Answer : BDiscuss 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 :**

⇒ The best excited reflector from a wave guide is

horn

parabolic

biconical

corner

⇒ A clock signal driving a 6-bit ring counter has a frequency of 1 MHz. How long is each timing bit high?

1 ms

2 ms

3 ms

6 ms

⇒ In a step down chopper using pulse width modulation, T

_{on}= 3 x 10

^{-3}and T

_{off}= 1 x 10

^{-3}s. The chopping frequency is

333.33

250

500

1000

⇒ In thermal ohm's law, temperature and power loss are analogous to

V and I respectively of ohm's law

I and V respectively of ohm's law

R and V respectively of ohm's law

I and R respectively of ohm's law

⇒ In an R-C series circuit excited by a voltage E, the charge across capacitor at

*t*= 0

^{+}is

0

CE

CE (1 -

*e*

^{-t/RC})

none of the above

⇒ A circuit has two branches in parallel and each branch has only one element. The applied voltage and source current are

*v*= 200 sin (200

*t*+ 30°) and

*i*= 50 sin (200

*t*+ 50°). If one branch has capacitor, the other branch contains

resistance

inductance

capacitance

resistance or capacitance

⇒ Find the number of loop equation and number of possible trees for the given gr

7, 2097152

7, 262144

7.5764801

6, 823543

⇒ The hexadecimal number BBC7 is equivalent to decimal number

49761

46791

47691

49761

⇒ The output resistance of a microphone is 20 ohms. It is to feed a line of impedance 320 ohms. To ensure maximum power transfer, the turn ratio of transformer is

16

256

2

4

⇒ The analog signal

*m*(

*t*) is given below

*m*(

*t*) = 4 cos 100 p

*t*+ 8 sin 200 p

*t*+ cos 300 p

*t*, the Nyquist sampling rate will be

1/100

1/200

1/300

1/600

⇒ 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

⇒ A bistable multivibrator

has no stable state

has one stable state

has two stable state

none of the above

⇒ The boolean expression for shaded area in the given figur

AB + AC

ABC + ABC

ABC + ABC

None of these

⇒ The primary function of lag compensator is to provide sufficient

gain margin

phase margin

both gain margin and phase margin

either (a) or (b)

⇒ The circuit whose properties are same in either direction is known as

unilateral circuit

bilateral circuit

irreversible circuit

reversible circuit

⇒ The stud in a stud mounted SCR acts as

anode

cathode

gate

anode or cathode

⇒ In a R-L-C circuit at resonance is

maximum in series resonance and minimum in parallel resonance.

maximum in parallel resonance and minimum in series resonance

minimum in both series and parallel resonances

maximum in both series and parallel resonances.

⇒

**Assertion (A):** The number ∈ such that the probability that an error is between -∈ and + ∈ is 1 is called probable error of single obserevation.

**Reason (R):** The standard deviation is the arms value of the deviation from the arithmetic mean.

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

Both A and R are correct but R is not correct explanation of A

A is true, R is false

A is false, R is true

⇒ Current in a 2H inductance in 10

*e*

^{-t}A. Admittance of the inductor is

-0.5 mho

0.5 mho

5 mho

10 mho

⇒ Which of the following is type declaration statement in C?

int bar

*s*=

*s*+ 1

king = horse + 1

prin = prin * prin

⇒ Assuming accumulator contain A 64 and the carry is set (1). What will register A and (CY) contain after XRA A?

A 6 H, 1

A 6 H, 0

00 H, 0

00 H, 1

⇒ The first pulse in a TV remote control is

start pulse

preliminary pulse

either start pulse or preliminary pulse

erase pulse

⇒ Effect of loading of line is

increase in Z

_{0}, a and β

increase in Z

_{0}and β but decrease in a

decrease in Z

_{0}, a and β

decrease in Z

_{0}and β but increase in a

⇒

**Assertion (A):** A transistor requires a continuous base signal for conduction but a thyristor requires a gate pulse.

**Reason (R):** Transistor find widespread application in power electronic circuits.

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

Both A and R correct but R is not correct explanation of A

A is correct but R is wrong

A is wrong but R is correct

⇒ Which of the following statements is not correct?

Propagation delay is the time required for a gate to change its state

Noise immunity is the amount of noise which can be applied to the input of a gate without causing the gate to change state

Fan-in of a gate is always equal to fan-out of the same gate

Operating speed is the maximum frequency at which digital data can be applied to a gate

⇒ If W

_{F}is the Fermi level, then in a metal at T = 0

all energy levels above W

_{F}filled, all those below W

_{F}are empty

all energy levels below W

_{F}are filled, all those above W

_{F}are empty

some energy levels, both below and above W

_{F}, are filled

all energy levels below and above W

_{F}are filled

⇒ An I/O processor control the flow of information between

cache memory and I/O devices

main memory and I/O devices

1 Two I/O devices

cache and main memories

⇒ Which one of the following can be used as parallel to series converter?

Decoder

Digital counter

Multiplexer

Demultiplexer

⇒ Four capacitors are in parallel. Their values are 36.3 μF, 3.85 μF, 34.002 μF and 850 μF with an uncertainty of digit in the last place. The total capacitance in significant figures is

75.0 μF

75.0 ± 0.1 μF

75.1 ± 0.1 μF

75.002 ± 0.1 μF

⇒ For circuit in figure, which combination of V

_{TH}and R

_{TH}represents the circuit as seen from

*ab<*

1 V, 10 Ω

1 V, 1000 Ω

1 mV, 1000 Ω

1 mV, 10 Ω

1 V, 10 Ω

1 V, 1000 Ω

1 mV, 1000 Ω

1 mV, 10 Ω