Question is ⇒ Which device has internal positive feedback?, Options are ⇒ (A) Two cavity klystron amplifier, (B) Multi-cavity klystron amplifier, (C) Reflex klystron amplifier, (D) All of the above, (E) , Leave your comments or Download question paper.

Question is ⇒ Which device has internal positive feedback?, Options are ⇒ (A) Two cavity klystron amplifier, (B) Multi-cavity klystron amplifier, (C) Reflex klystron amplifier, (D) All of the above, (E) , Leave your comments or Download question paper. Previous question Next question


Q1.	Which device has internal positive feedback?
A.	Two cavity klystron amplifier [Wrong Answer]
B.	Multi-cavity klystron amplifier [Wrong Answer]
C.	Reflex klystron amplifier [Correct Answer]
D.	All of the above [Wrong Answer]
View Answer 1 -2 Explanation:- Answer : C 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 :

⇒ Windows can run several tasks simultaneously.
TRUE
FALSE

⇒ The signal plate of vidicon tube is coated with tin oxide.
TRUE
FALSE

⇒ In the given figure the line voltage after a number of reflections wil
30 V
-30 V
10 V
-10 V

⇒ Transistor T₁ operates at 30 kHz and T₂ operates at 300 Hz. The flicker noise is
not depend on frequency
T₁ > T₂
T₁ = T₂
T₁ < T₂

⇒ An electron rises through a voltage of 100 V. The energy acquired by it will be
100 eV
100 joules
(100)^1.2 eV
(100)^1.2 joules

⇒

Assertion (A): For the function shown in fi
Both A and R are correct and R is correct explanation of A
Both A and R are correct but R is not correct explanation of A
A is true, R is false
A is false, R is true

⇒ In what condition does BJT act like an open switch
cut off
saturation
active
both (b) and (c)

⇒ In a 3 phase full converter, the instantaneous output voltage can have negative part if
firing angle is less than 60°
firing angle is less than 90°
firing angle is more than 60°
firing angle is more than 90°

⇒ The mass of an electron is nearly
9.1 x 10^-27 kg
9.1 x 10^-29 kg
9.1 x 10^-31 kg
9.1 x 10^-35 kg

⇒ Above ferroelectric curie temperature, spontaneous polarization in ferroelectric materials becomes stronger.
TRUE
FALSE

⇒

Match the following:

	List I (Instruction)		List II (Flag's getting affected)
A.	ORI	1.	CY reset
B.	DAA	2.	CY reset and AC reset
C.	PCHIL	3.	S, Z, AC, P, CY flags affected
		4.	S, S, P are modified
		5.	No flags affected

A-2, B-3, C-5
A-4, B-3, C-5
A-1, B-2, C-3
A-2, B-4, C-1

⇒ In which function is each term known as maxterm?
SOP
POS
Hybrid
SOP and Hybrid

⇒ In a tape recorder
the width of air gaps of record and erase heads is almost equal
the air gap of record head is wider than the air gap of erase head
the air gap of erase head is wider than the air gap of record head
any of the two air gaps can be wider than the other

⇒ In VHS format diameter of head drum is about
1 m
20 cm
6 cm
1 cm

⇒ Ionospheric storm causes an abnormal decrease in the critical frequency.
TRUE
FALSE

⇒ Which of the following cannot be used to demodulate SSB?
Complete phase-shift generator
Product detector
Diode balanced modulator
Bipolar transistor balanced modulator

⇒ In the output of a DM speech encoder, the consecutive pulses are of opposite polarity during time interval t₁ < t < t₂. This indicates that during this interval
the input to the modulator is essentially constant
the modulator is going through slope overload
the accumulator is in saturation
the speech signal is being sampled at the Nyquist rate

⇒ Which of the following is a better recording medium?
Ferric oxide
Ferrous oxide
Chromium di oxide
Either (a) or (b)

⇒ In Bode analysis the correction at corner frequency is 3 dB.
TRUE
FALSE

⇒ Which amplifier has a voltage gain of less than 1?
Common emitter
Common collector
Common base
Both CB and CC

⇒ The O/P Power of a power amplifier is several times its input power. It is possible because
power amplifier introduces a -ve resistance
there is +ve feed back in the circuit
step up transformer is use in the circuit
power amplifier converts a part of I/P d.c. power into a.c. power

⇒ In a fascimile reproduction time to scan one line is 2 ms. If it has 4% blanking, the visible trace time is
1.92 ms
2.08 ms
50 ms
0.08 ms

⇒ In the saturation region of CE output characteristics of n-p-n transistor, V_CE is about
0.5 V
15 V
- 0.5 V
- 15 V

⇒ Class C amplifier is suitable for
a narrow frequency band
a wide frequency band
audio frequencies
either (b) or (c)

⇒ Out of S, R, J, K, Preset, Clear inputs to flip flops, the synchronous inputs are
S, R, J, K only
S, R, Preset, Clear only
Preset, Clear only
S, R only

⇒ Consider the following program in C 1
-1
1.15
-1.15

⇒ The antenna current of an AM broad cast transmitter, modulated to a depth of 40% by an audio sine wave is 11 amperes. It increased to 12 ampere as a result of simultaneous modulation by another sine wave. The modulation index due to this second sine wave is :
0.4
0.757
0.643
0.8

⇒ Full adder circuit can be implemented by
Multiplexers
Half adders
AND or OR gates
Decoders

⇒ At room temperature kT = 0.03 eV.
TRUE
FALSE

⇒

Assertion (A): For Diamond, μ_r = 1

Reason (R): Diamond is a diamagnetic material.

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