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. | ∈_{0} has no other physical meaning than that of a fundamental conversion factor. |

A. | TRUE [Correct Answer] |

B. | FALSE [Wrong Answer] |

View Answer
Explanation:-
Answer : ADiscuss 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 phase velocity of an EM wave propagating in a hollow metallic rectangular waveguide in the TE

_{10}mode is

equal to its group velocity

less than the velocity of light in free space

equal to the velocity of light in free space

greater than the velocity of light in free space

⇒ A reflex klystron oscillator is a

low power device

high power device

high efficiency device

both (a) and (b)

⇒ When the ac base voltage in a CE amplifier circuit is too high, the ac emitter current is

zero

constant

alternating

distorted

⇒ A battery charger can drive a current of 5A with 1Ω resistance connected at its output. If it can charge 2 V battery at 7 A rate, its Thevenin's equivalent circuit will be

7.5 in series with 0.5 Ω resistance

1.25 V in series with 1.5 Ω resistance

7.5 V in parallel with 0.5 Ω resistance

12.5 V in parallel with 1.5 Ω resistance

⇒ 74 HC series can sink upto 4 mA. The 74 LS series has I

_{IL(max)}- 0.4 mA. How many 74 LS inputs be driven by 74 HC output?

100

none

8

10

⇒ A two branch parallel tuned circuit has a coil of resistance 100 Ω and inductance 0.005 H in one branch and 10

*n*F capacitor in the second branch. At resonance frequency, the dynamic resistance is

1 Ω

10 Ω

100 Ω

more than 100 Ω

⇒ A constant

*k*low pass T section filter has a characteristic impedance of 600 p at zero frequency. At

*f*=

*f*

_{c}the characteristic impedance is

600 Ω

zero

infinite

more than 600 ohms

⇒ In given figure the switch was closed for a long time before opening at

*t*= 0. The voltage V

_{x}at

*t*= 0

^{+25 V50 V-50 V0 V}

⇒ If a number of odd functions are added, the resultant sum is

even function

odd funtion

either even or odd function

mixture of odd amd even functions

⇒ A parabolic antenna produces a radiation pattern which is

circularly polarized

highly directional

omnidirectional

linearly polarized

⇒ In an ac series RLC circuit the maximum phase difference between any two voltages can be

90°

45°

- 90°

180°

⇒ High purity copper is obtained by

rolling casting

casting

electrolytic refining

induction heating

⇒ The tree selected for the formation of state equations contains

all voltage sources

all capacitors

all inductors and current sources

all voltage sources and maximum number of capacitors

⇒ Common emitter transistor has

high current and high voltage gain

low current gain and low voltage gain

high current gain and low voltage gain

low current and voltage gain

⇒ Which of the following values represents the open loop gain of typical op-amp?

100

10000

100000

1000000

⇒ For a = - 1, find the value of V

_{2∞0V1none of the above}

⇒ RF amplifiers are used in radio receivers for

better sensitivity

improved signal-to-noise ratio

better coupling of receiver to the antenna

all of the above

⇒ Which of the following is taken as reference antenna for directive gain?

Half wave dipole

Elementary doublet

Isotropic

Infinitesimal dipole

⇒

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

⇒ IC 74181 has two select lines.

TRUE

FALSE

⇒ For a given voltage, four heating coils will produce maximum heat when connected

all in parallel

all in series

with two parallel pairs in series

one pair in parallel with the other two in series

⇒ The cut in voltage of a diode is nearly equal to

applied forward voltage

applied reverse voltage

barrier potential

none of the above

⇒ A thyristor has a maximum allowable junction temperature of 120°C and the ambient temperature is 40°C. If thermal resistance is 1.6° C/W, the maximum allowable internal power dissipation is

20 W

50 W

92 W

128 W

⇒

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

⇒ In 8085 microprocessor, what is the length of A-register?

6 bits

8 bits

12 bits

16 bits

⇒ Chrome signals in PAL colour television system consist of

R - Y and B - Y signal

V and U signals

I and Q signals

R - Y and G - Y signals

⇒ In pulse code modulation, if the signal is sampled at the rate of

*f*and the number of pulses in one code group is

*p*, then the number of pulses per second will be

*p*/

*f*

*f*/

*p*

1/

*pf*

*pf*

⇒ A resistor of 10 kΩ has an rms noise voltage of 1 mV under a certain set of conditions. A resistor of 20 kΩ under the same conditions will have an rms noise voltage of

1 mV

2 mV

1.414 mV

4 mV

⇒ In the circuit shown, the power supplied by the voltage so

0 W

5 W

10 W

100 W

⇒ For most metals, Fermi level E

_{F}is less than

0.1 eV

2 eV

5 eV

10 eV