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Q1. | A 1 μF capacitor is connected to 12 V battery. The energy stored in the capacitor is |

A. | 12 x 10^{-6} J [Wrong Answer] |

B. | 24 x 10^{-6} J [Wrong Answer] |

C. | 48 x 10^{-6} J [Wrong Answer] |

D. | 72 x 10^{-6} J [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 :**

⇒ The input gate current of a FET is

a few amperes

a few milli amperes

a few micro amperes

negligible

⇒ When narrow current pulses drive a high Q resonant circuit the voltage across the circuit looks like

narrow pulses

half sine wave

almost sine wave

either (a) or (b)

⇒ A vacant electronic state moves in the same direction as would a positive charge carrier.

TRUE

FALSE

⇒ In the given figure, the number of individual loop

2

4

5

6

⇒ The function (sin

*x*)/

*x*

has a period 2p, decays with increasing

*x*and has zeros at

*n*p,

*n*= ± 1, ± 2

has a period p

has a period p/2

has a period 2p, decays with increasing

*x*, is an even function and has zeros at

*n*p,

*n*= ± 1, ± 2

⇒ A digital clock uses __________ chip

SSI

LSI

VLSI

MSI

⇒ In the above case, what will be the value of capacitor to obtain 100 kHz frequency?

0.0065 pF

0.0130 pF

0.0260 pF

0.520 pF

⇒ In the circuit of figure the current through C at

*t*= &infin

0.166666666666667

2.5 A

3.1 A

0

⇒ For the circuit shown in the figure, D has a transition from 0 to 1 after CLK changes from 1 to 0. Assume gate delays to be neglig

Q goes to 1 to the CLK transition and stays at 1

Q goes to 0 at the CLK transition and stays at 10

Q goes to 1 at the CLK transition and goes to 0 when D goes to 1

Q goes to 0 at the CLK transition and goes to 1 when D goes to 1

⇒

**Assertion (A):** An unbiased p-n junction develops a built-in potential at the junction with the *n*-side positive and the *p*-side negative.

**Reason (R):** The *p-n* junction behaves as a battery and supplies current to a resistance connected across its terminals.

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

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

A is true but R is false

A is false but R is true

⇒

Match the following:

List I (F.T and F.S) | List II (Properties) | ||
---|---|---|---|

A. | Fourier Series | 1. | Discrete, Periodic |

B. | Fourier Transform | 2. | Continuous, Periodic |

C. | Discrete Time Fourier | 3. | Discrete aperiodic |

D. | Discrete Fourier Transform | 4. | Continuous, aperiodic |

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

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

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

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

⇒ In figure as the load resistance is cha

the zener current remain constant

the load current remains constant

the output voltage remains constant

the output voltage and current through

*R*remain constant

⇒ The force in a magnetic field is given by F =

*qv*B

F and

*q*are perpendicular and

*v*and B are perpendicular

F and

*q*only are perpendicular to each other

F and

*v*, F and B are mutually perpendicular to each other and

*v*and B at any angle between them

All the four components are perpendicular to each other

⇒ The circuit show in the figure has 4 boxes each described by inputs P, Q, R and outputs

*y, z*

4 bit adder giving P + Q

4 bit subtractor P - Q

4 bit subtractor Q - P

4 bit adder P + Q + R

⇒ The dynamometer principle can be used for

ammeter only

voltmeter only

wattmeter only

ammeter, voltmeter and wattmeter

⇒ In a 3 phase bridge inverter with 120° mode of operation the. number of thyristors conducting at one time are

1

2

3

4

⇒ A three state switch has three outputs. These are

low, low and high

low, high, high

low. floating, low

low, high, floating

⇒ The cut off wavelength in circular waveguide

guide diameter

square of guide diameter

cube of guide diameter

square root of guide diameter

⇒

Match the following:

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

A. | Anderson Bridge | 1. | Low resistance |

B. | Kelvin Bridge | 2. | Medium resistance |

C. | Schering Bridge | 3. | Inductance |

D. | Wheatstone Bridge | 4. | Capacitance |

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

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

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

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

⇒ At frequencies of 10 MHz and higher the impedance represented by ground is primarity

resistive

inductive

capacitive

partly resistive and partly capacitive

⇒ An arrangement of several individual antennas to spaced and phased that their individual contributions combine in one preferred direction and cancel in all other directions, to get greater directive gain or directivity, is known as

directional radiation of antennas

antenna gain stability

array of antennas

none of the above

⇒ Narrow band FM signal can be represented as

A cos (2p

*f*) - β

_{c}t*A*sin (2p

*f*) sin (2p

_{c}t*f*)

_{m}tA cos (2p

*f*) - β

_{m}t*A*sin (2p

*f*) sin (2p

_{c}t*f*)

_{m}tA cos (2p

*f*) + β

_{c}t*A*sin (2p

*f*) sin (2p

_{c}t*f*)

_{m}tA cos (2p

*f*) + β

_{m}t*A*sin (2p

*f*) sin (2p

_{m}t*f*)

_{c}t⇒ In a radio receiver, if the intermediate frequency is too low

Image-frequency rejection will improve

Selectivity will be too sharp

The frequency selectivity of the local oscillator will have to be lowered

All of the above

⇒ Consider the following program in Ba

60, 20, 20, 30, 10

10, 30, 20, 20, 60

60, 20, 30, 10, 20

60, 30, 10, 20, 20

⇒ If the electric field intensity associated with a uniform plane electromagnetic wave travelling in a perfect dielectric medium is given

3.0 x 10

^{8}m/sec

2 x 10

^{8}m/sec

6.28 x 10

^{7}m/sec

2 x 10

^{7}m/sec

⇒ For an antenna of height

*h*metres, the radio horizon is equal to

_{t}4

*h*metres

_{t}4

*h*km

_{t}2.5

*h*km

_{t}2.5

*h*metres

_{t}⇒ How many interrupts are there in 8085 microprocessor?

4

5

6

8

⇒ The radiation pattern of a parabola antenna is

omnidirectional

a figure of directional

highly directional

none of the above

⇒ Consider the following statements

- In a pulsed radar, the transmitted pulses are of high frequency
- In a pulsed radar, the transmitted pulses are of high power
- In a pulsed radar, the transmitted pulses are of brief duration
- In a pulsed radar, the transmitted pulses are of square wave shape.

1 only

1, 2 and 3 only

1, 2, 3, 4

1 and 3 only

⇒ Some of MOS families are PMOS, NMOS, CMOS. The family dominating the LSI field where low power consumption is necessary is

NMOS

CMOS

PMOS

both NMOS and CMOS