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Q1. | In figure, the short circuit current through terminal AB wil |

A. | 1.5 A [Wrong Answer] |

B. | 0.125 [Wrong Answer] |

C. | 0.0833333333333333 [Wrong Answer] |

D. | 0.0416666666666667 [Correct Answer] |

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

⇒ In the silicon BJT circuit shown below, assume that the emitter area of transistor Q1 is half that of transistor

0.5 mA

2 mA

9.3 mA

15 mA

⇒ A NAND gate has 3 inputs and one output. The number of thyristors required for this gate are

1

2

3

3 or 4

⇒ For generating 1 MHz frequency signal, the most suitable circuit is

phase shift oscillator

weinbridge oscillator

colpitt's oscillator

clapp oscillator

⇒

Match the following:

List I (Digital circuit) | List II (Circuit type) | ||
---|---|---|---|

A. | BCD to 7 segment decoder | 1. | sequential circuit |

B. | 4-to-1 MUX | 2. | combinational circuit |

C. | 4 bit shift register | 3. | neither sequential nor combinational circuit |

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

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

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

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

⇒

Match the following:

List I (Logic family) | List II (Characteristic of logic family) | ||
---|---|---|---|

A. | TTL | 1. | Maximum power Consumption |

B. | ECL | 2. | Highest Packing Density |

C. | NMOS | 3. | Least Power Consumption |

D. | CMOS | 4. | Saturated Logic |

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

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

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

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

⇒ If V

_{A}= - 10 V and V

_{B}= - 15 V, VAB = 5 V.

TRUE

FALSE

⇒ 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

⇒ Consider an angle modulated si

10W

18W

20W

28W

⇒ Aperture circuit produces __________ in sample hold circuit.

the total sampling time

delay between the instance at which hold command is initiated and the instance at which O/P starts tracking I/P

the time taken by O/P to settle within the specified 1% error band, that of the I/P

time required by holding capacitor to reach upto the level close to input

⇒ A CMOS amplifier when compared to an N-channel. MOSFET, has the advantage of

higher cut off frequency

higher voltage gain

higher current gain

lower current drain from the power supply, there by less dissipation

⇒ A radio station works at 800 kHz and uses AM. If this is a public broadcast system, it should transmit using

parabolic reflector to transmit all round

turnstile antenna for the required land

half wave long horizontal wave

a vertical antenna less than quarter for practical reasons

⇒ In a CE amplifier drives a low load resistance directly the result will be

overloading of amplifier

underloading of amplifier

overloading or underloading of amplifier depending on circuit

none of the above

⇒ When thyristors are connected in series and parallel, it may be necessary to have :

current derating

voltage derating

both current and voltage derating

none of the above

⇒ A pulse train can be delayed by a finite number of clock periods by using

serial in-serial out shift register

parallel in serial out shift register

serial in-parallel out shift register

parallel in parallel out shift register

⇒ Virtual height of an ionospheric layer is always greater than its actual height.

TRUE

FALSE

⇒ Good frequency stability can be available

crystal oscillators

Hartley oscillators

colpitts oscillators

none of the above

⇒ If a fuse is higher than required current rating is employed in a circuit, it will

blow more frequently since it carries more current

afford better protection to the circuit

seriously overload the circuit

lead to larger maintenance cost

⇒ Which of the statement is correct?

*h*and

*g*matrices are inverse of each other

*z*and

*y*matrices are inverse of each other

for reciprocal networks AD - BC = 1

ABCD parameters are used in transistor circuit

⇒ A single element strain gauge bridge has two fixed resistances R

_{1}and R

_{1}of 120 Ω each and a variable resistance which gives full deflection at 120 Ω for zero strain and 120.6 Ω for straine

*e*. If gauge factor is 2, strain

*e*is

0.0025

0.0035

0.005

0.0075

⇒ A carrier wave carries information.

TRUE

FALSE

⇒ Consider the following time parameters

- Domain growth time constant.
- Transit time.
- Dielectric relaxation time in positive mobility regime.

1, 2, and 3

1 and 2 only

1 and 3 only

2 and 3 only

⇒ 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

⇒ A rectangular wave guide is designed to propagate at the dominant mode TE

_{10}at a frequency of 5 GHz. The cut-off frequency is 0.8 of signal frequency. The ratio of the guide width to height is 2. The dimensions of the guide are

3.75 cm, 1.875 cm

4 cm, 2 cm

8 cm, 4 cm

2.54 cm, 1.27 cm

⇒ If E is energy level of electron and E

_{F}is fermi level, and T = 0 and E > E

_{F}, then

the probability of finding an occupied quantum state of energy higher than E

_{F}is zero

all quantum states with energies greater than E

_{F}are occupied

some quantum states with energies greater than E

_{F}are occupied

majority of quantum states with energies greater than E

_{F}are occupied

⇒ A 3 phase induction motor is controlled by voltage and frequency control such that the ratio V/

*f*is constant. At 50 Hz, the speed is 1440 rpm. At 25 Hz, the speed is likely to be

about 1350 rpm

about 720 rpm

about 360 rpm

either (b) or (c)

⇒ For an P-channel enhancement type MOSFET determine the drain current if K = 0.278 x 10

^{-3}A/V

^{2}, V

_{GS}= -4V, V

_{T}= -2V, Voltage equivalent at 27°C = 26 mV.

10 mA

1.11 mA

0.751 mA

46.98 mA

⇒ For radiating ultraviolet rays, LEDs use

zinc sulphide

gallium arsenide

gallium phosphide

none of the above

⇒ In following figure find V

_{DSQ}by assuming gate current is negligible for the

*p*-channel JFET. (if I

_{DQ}= - 6 mA, R

_{S}= 0, V

_{DD}= -18 V, R

_{D}= 2 kΩ, I

_{DSS}= - 10 mA, I

_{PO}= - 3 V)

4 V

- 6 V

- 10 V

6 V

⇒ A certain sound has 10000 times more energy than another sound. The number of times it would sound stronger to a listener is

40

10000

100

10

⇒ Microprocessor 386SX is a 16/32 bit microprocessor. It has

16 bit registers and 32 bit data bus

16 bit registers and 16 bit data bus

32 bit registers and 32 bit data bus

32 bit register and 16 bit data bus