Question is ⇒ A BJT amplifier has a power gain of 0.5 from source to base. The power gain in dB is, Options are ⇒ (A) -0.3 dB, (B) -3 dB, (C) -6 dB, (D) -10 dB, (E) , Leave your comments or Download question paper.

Question is ⇒ A BJT amplifier has a power gain of 0.5 from source to base. The power gain in dB is, Options are ⇒ (A) -0.3 dB, (B) -3 dB, (C) -6 dB, (D) -10 dB, (E) , Leave your comments or Download question paper. Previous question Next question


Q1.	A BJT amplifier has a power gain of 0.5 from source to base. The power gain in dB is
A.	-0.3 dB [Wrong Answer]
B.	-3 dB [Correct Answer]
C.	-6 dB [Wrong Answer]
D.	-10 dB [Wrong Answer]
View Answer 1 -1 Explanation:- Answer : B Discuss it below : !! OOPS Login [Click here] is required to post your answer/result Help other students, write article, leave your comments

Previous question Next question

Also Read Similar Questions Below :

⇒ Which of the following will increase the antenna radiation efficiency?
Use of larger section of conductor
Providing insulation on conductor
Top loading of antenna
Any of the above

⇒ Personal computer cannot be used for which one of the following?
Game playing
Weather forecasting
Office Automation
Home computing

⇒ A lossless transmission line with air dielectric is 6 m long. What is the line length at 30 MHz?
1 wavelength long
0.5 wavelength long
0.6 wavelength long
0.25 wavelength long

⇒ The diagram to show distance time history of electrons in klystron amplifier is called
apple gate diagram
asynchronous diagram
bunching diagram
velocity modulation diagram

⇒ Ultra high frequency oscillators work in the range
20 Hz to 20 kHz
1 kHz to 30 kHz
30 kHz to 30 MHz
above 30 MHz

⇒ Consider the following statements:

Strictly speaking C supports 1-dimensional arrays only.
An array element may be an array by itself.
Array elements need not occupy contiguous memory locations.

Which of the above statements is/are correct?
1 only
2 only
1 and 2
2 and 3

⇒

Assertion (A): When an SCR is conducting, the voltage drop across is about 1 V.

Reason (R): When an SCR is conducting, the junction temperature is about 200°C.

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

⇒ The inputs to a 4 channel MUX have the following bandwidths. Channel 1-50 Hz, channel 2-200 Hz. Channel 3-75 Hz. Channel 4-90 Hz. The theoretical minimum sampling rate of the MUX is
200 Hz
400 Hz
415 Hz
1600 Hz

⇒ Consider the following statements:

A flip-flop is used to store 1-bit of information.
Race-around condition occurs in a J-K flip-flop when both the inputs are 1.
Master-slave configuration is used in flip-flops to store 2-bits of information
A transparent latch consists of a D-type flip-flop.

Which of the above statements is/are correct?
1 only
1, 3 and 4
1, 2 and 4
2 and 3 only

⇒ If a signal f(t/2) has energy is E/n then energy of the signal f(nt) is equal to __________ (n is constant)
E/2n²
2E/n²
E/n²
2En²

⇒ The drift velocity of electrons is
very small as compared to speed of light
equal to speed of light
almost equal to speed of light
half the speed of light

⇒ In a 4 bit weighted resistor D/A converter, resistor value corresponding to LSB is 32 k ohm. The resistor value corresponding to MSB is
32 k ohm
16 k ohm
8 k ohm
4 k ohm

⇒ The advantage of Weinbridge oscillator over the phase shift oscillator is that oscillator the frequency may be varied over a range of
0.0430555555555556
0.04375
0.0451388888888889
0.0486111111111111

⇒

Match the following:

	List I (Transducer)		List II (Quantity measured)
A.	LVDT	1.	Pressure
B.	Bourden gauge	2.	Temperature
C.	Strain gauge	3.	Displacement
D.	Thermistor	4.	Stress

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

⇒ The width of a radio beam from a 1 m diameter parabolic antenna at 10 GHz is about
100°
50°
5°
1°

⇒ Which of the following methods can be used to measure power in a single phase circuit without using wattmeter?

One voltmeter, one ammeter
Two voltmeters, two ammeter
Three voltmeters
Three ammeters

1 and 2 only
2 and 4 only
1 and 3 only
3 and 4 only

⇒

Match the following:

	List I		List II
A.	Copper	1.	produces discrete energy level just above valence band
B.	Rubber	2.	produces discrete energy level just below conduction band
C.	Antimony	3.	large forbidden gap
D.	Boron	4.	valence and conduction bands overlap

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

⇒ An AND gate has two inputs A and B and one inhibit input S. Out of total 8 input states, output is 1 in
1 state
2 states
3 states
4 states

⇒ VSWR can have any value between
0 and 1
- 1 to + 1
0 to ∞
1 to ∞

⇒ Solution of Laplace equations, which are continuous through the second derivative, are called
bessel functions
odd functions
harmonic functions
fundamental functions

⇒ The magnitude of transport lag factor is always zero.
TRUE
FALSE

⇒ In a 3 phase bridge inverter with 180° mode of operation the numbers of thyristors conducting at one time are
1
2
3
4

⇒ IC 7485 cannot be cascaded.
TRUE
FALSE

⇒ Which of the following could be the equation for non-linear resistor shown in figu
a + be + ce² + de³
a - be - ce² - de³
a + be + ce² - de³
a + be - ce² - de³

⇒ With four Boolean variables, how many Boolean expressions can be performed?
16
256
1024 (1 K)
64K (64 x 1024)

⇒ Assuming earth to be a sphere of radius 6400 km and height of a geosynchronous satellite above Earth as 36000 km, the velocity of a geosynchronous satellite is __________ km/hr.
28000
15000
36000
11100

⇒ A 1000 kHz carrier wave modulated 40% at 4000 Hz is applied to a resonant circuit tuned to a carrier frequency and having Q = 140. What is the degree of modulation after passing the wave through this circuit?
0.4
0.2
0.27
0.554

⇒

Match the following:

	List I		List II
A.	Digital counter	1.	Measurement of harmonics
B.	Schering Bridge	2.	Measurement of frequency
C.	Meggar	3.	Measurement of loss angle of dielectric
D.	Spectrum analyser	4.	Measurement of insulation resistance

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

⇒ Which one of the following is correct? Energy of a power signal is
finite
zero
infinite
between 1 and 2

⇒ Recommended fanout for ECL is
5
10
15
25