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. | Radar is essentially an echo ranging system |

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 :**

⇒ CD4010 is a

inverting buffer

non-inverting hex buffer

NOR IC

NAND IC

⇒ If the temperature of an extrinsic semiconductor is increased so that the intrinsic carrier concentration is doubled, then

the majority carrier density is doubled

the minority carrier density is doubled

the minority carrier density becomes 4 times the original value

both the majority and minority carrier densities double

⇒

**Assertion (A):** Dielectric constant is independent of temperature unless the temperature is extremely high.

**Reason (R):** For normal temperatures the number of atoms per unit volume is constant.

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

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

A is true but R is false

A is false but R is true

⇒ The transfer function of a system is given by H(

*s*) = 1/

*s*

^{2}(

*s*- 2). The impulse response of the system is

(

*t*

^{2*}

*e*

^{-2t}) U(

*t*)

(

*t*

^{*}

*e*

^{2t}) U(

*t*)

(

*t*

*e*

^{-2t}) U(

*t*)

(

*t*

*e*

^{2t}) U(

*t*)

⇒ Antenna is a __________ element

passive

active

resistive

capacitive

⇒ Dolby system of noise reduction divides the total audio spectrum into

8 frequency bands

4 frequency bands

2 frequency bands

none of the above

⇒ Among the filter, Bessel, Butterworth and chebyshev, the filter with maximally flat response is

all

butterworth

bessel

butterworth, Chebyshev

⇒ If figure, power dissipated in 30Ω resistance will be maximum when value of

30 Ω

16 Ω

9 Ω

zero

⇒ If F(

*j*ω) is the Fourier transform of

*f*(

*t*), then

£

*f*(-

*t*) = F(

*j*ω)

£

*f*(-

*t*) = F* (

*j*ω)

£

*f*(-

*t*) = F(-

*j*ω)

£

*f*(-

*t*) = F* (

*- j*ω)

⇒ The purpose of using negative feedback in a op-amps is to

stabilize overall gain

increase output

stabilize overall gain and increase output

increase output and decrease input

⇒ An oscilloscope has an input impedance consisting of 1 MΩ and 20 pF is parallel. A high impedance probe connected to input of this oscilloscope has a 10 MΩ series resistance. This 10 MΩ series resistance

may not be shunted

should be shunted by 2 pF capacitor

should be shunted by 20 pF capacitor

should be shunted by 200 pF capacitor

⇒ Consider an arbitrary distribution of conducting bodies in a charge free space according to the uniqueness theorem, which of following are required to be specified in order that the field is uniquely determined everywhere?

- Total charge on each conductor
- Potential at each conductor surface
- Potential at same of conductor and total charge on the remainder
- Total charge as well as potential gradient on each conductor surface

1 and 3

2 and 4

1, 2, and 3

1, 2, 3, 4

⇒ The signal m(

*t*) = 10 cos 100 p

*t*is sampled at the rate of F

_{s}= 75 H

_{z, }then determine signal after sampling.

4 cos 100 p

*t*+ 8 sin 200 p

*t*

4 cos 100 p

*t*+ 8 sin 200 p

*t*+ cos 75 p

*t*

4 cos 25 p

*t*+ 8 sin 50 p

*t*+ cos 75 p

*t*

none

⇒ The circuit show

voltage series feedback amplifier

transconductance amplifier

transresistance amplifier with open circuit mutual resistance R

_{F}

transresistance amplifier with short circuit mutual resistance R

_{F}

⇒ The initial state of MOD-16 down counter is 0110. What state will it be after 37 clock pulses?

Indeterminate

110

101

1

⇒ Reciprocity theorem is applicable to

circuits with one source

circuits with only one independent source

circuits with any number of sources

circuits with any number of independent sources

⇒ The number of essential prime implicant for the logic express

3

5

4

6

⇒ In the circuit shown the voltage V

_{s}has a phase angle of __________ with respect to V

_{L120°60 °-90 °0°}

⇒ Higher value of ripple factor indicates

poor rectification

ideal rectification

r.m.s. value to peak value

none of the above

⇒ If

*f*(

*t*) is an even function, the coefficients F

_{n}in the exponential form of Fourier series

are real

are imaginary

are complex

may be real or imaginary

⇒ What is the period of the sinusoidal signal

*x*(

*n*) = 5 cos [0.2 pn]?

10

5

1

0

⇒ In most electric irons, the thermister used for controlling temperature is

vapour-filled bulb

high-expansion steel rod

bimetallic strip

thermopile

⇒ A boot strap generally incorporates

CB configuration

CE configuration

emitter follower

none of the above

⇒ CW Doppler radar is capable of giving accurate measurements of relative velocities.

TRUE

FALSE

⇒ 1 GHz is equal to

10

^{6}Hz

10

^{8}Hz

10

^{9}Hz

10

^{10}Hz

⇒ If a system is to follow arbitrary inputs accurately the bandwidth should be

large

small

very small

neither small nor large

⇒ Almost all resistors are made in a monolithic integrated circuit

during the entire diffusion

while growing the epitaxial layer

during the base diffusion

during the collector diffusion

⇒ Graphic equaliser system in stereophonic systems generally have

3 or 4 bands

1 band

more than 8 bands

large number of bands

⇒ If number of information bits is 11, the number of parity bits in Hamming code is

5

4

3

2

⇒ A transistor has a current gain of 0.99 in the CB mode. Its current gain in the CC mode is

100

99

1.01

0.99