Assertion (A): A transistor requires a continuous base signal for conduction but a thyristor requires a gate pulse.Reason (R): Transistor find widespread application in power electronic circuits.

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

Assertion (A): The surge current which an SCR can withstand is much higher than rms on state current.Reason (R): The duration of surge current is very small.

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

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

In superheterodyne receivers, the local oscillator is used to

amplify the received modulated carrier

shift the frequency of the received modulated carrier to the IF band

A notch filter is sometimes used in communication receivers to

increase receiver gain at some specific frequency

reduce receiver gain at some specific frequency

increase receiver gain at some specific frequency

A forward voltage of 9 V is applied to a diode in series with a 1 k&ohm; load resistor. The voltage across load resistor is zero. It indicates that

diode is either short circuited or open circuited

Assertion (A): An ideal rectifier should have unity harmonic factorReason (R): An ideal rectifier should have unity displacement factor.

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

Assertion (A): A TRIAC is a bidirectional SCR.Reason (R): A TRIAC is a four layers 3 terminal device and can conduct in both directions.

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

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

The selectivity of a radio receiver is

its ability to amplify weak signals

its ability to reject adjacent unwanted signals

its ability to amplify weak signals

the frequency at which it gives maximum amplification to signal.

If the intermediate frequency of a superheterodyne receiver falls within the tuning range of the receiver

Heterodyne whistles will be heard

Tuning to the frequency band immediately adjacent to the intermediate frequency will become impossible

Which of the following statement about receivers is false?

Double conversion is used to improve image rejection

Double conversion is used to improve selectivity

Variable sensitivity is used to improve selectivity

Variable sensitivity is used to eliminate selective fading

Mechanical impedance is the ratio of

rms velocity to rms displacement

9294 + Mcqs in Electronics and Communication Engineering Page 10 McqOptions

451.	Thyristors are not suitable for logic circuits.
A.	True
B.	False
Answer» C.

Discussion

452.	In a single phase full wave converter (M-2 connection) feeding on R - L load, the input voltage is v = V_m sin t. The expression for dc output voltage is
A.	<img src="/_files/images/electronics-and-communication-engineering/power-electronics/276-244-1.png">
B.	<img src="/_files/images/electronics-and-communication-engineering/power-electronics/276-244-3.png">
C.	<img src="/_files/images/electronics-and-communication-engineering/power-electronics/276-244-4.png">
D.	<img src="/_files/images/electronics-and-communication-engineering/power-electronics/276-245-1.png">
Answer» D. <img src="/_files/images/electronics-and-communication-engineering/power-electronics/276-245-1.png">

Discussion

453.	A thyristor has a turn on time of 6 s. If the anode circuit is inductive, the turn on time will be
A.	6 s
B.	less than 6 s
C.	more than 6 s
D.	either 6 s or less
Answer» D. either 6 s or less

Discussion

454.	Assertion (A): A transistor requires a continuous base signal for conduction but a thyristor requires a gate pulse. Reason (R): Transistor find widespread application in power electronic circuits.
A.	Both A and R are correct and R is correct explanation of A
B.	Both A and R correct but R is not correct explanation of A
C.	A is correct but R is wrong
D.	A is wrong but R is correct
Answer» D. A is wrong but R is correct

Discussion

455.	A single phase half wave rectifier is feeding a resistive load. Input voltage v = V_m sin t. The output dc voltage is V_dc and output rms voltage is V_rms . If firing angle is 180 , V_dc and V_rms respectively are
A.	0 and 0
B.	<img src="/_files/images/electronics-and-communication-engineering/power-electronics/275-229-1.png">
C.	0 and - V
D.	<sub><i>m</i></sub>
E.	<img src="/_files/images/electronics-and-communication-engineering/power-electronics/275-231-1.png">
Answer» B. <img src="/_files/images/electronics-and-communication-engineering/power-electronics/275-229-1.png">

Discussion

456.	A dc separately excited motor has constant field current. The armature is fed from a single phase supply through a full converter. When a = 0, speed is 500 rpm. If a = 45 , the speed is likely to be
A.	about 350 rpm
B.	about 250 rpm
C.	about 175 rpm
D.	about 125 rpm
Answer» E.

Discussion

457.	In a multiphase chopper, all choppers operate together.
A.	True
B.	False
Answer» C.

Discussion

458.	Assertion (A): The surge current which an SCR can withstand is much higher than rms on state current. Reason (R): The duration of surge current is very small.
A.	Both A and R are correct and R is correct explanation of A
B.	Both A and R correct but R is not correct explanation of A
C.	A is correct but R is wrong
D.	A is wrong but R is correct
Answer» B. Both A and R correct but R is not correct explanation of A

Discussion

459.	In superheterodyne receivers, the local oscillator is used to
A.	detect the modulating signal
B.	amplify the received modulated carrier
C.	shift the frequency of the received modulated carrier to the IF band
Answer» D.

Discussion

460.	The terminals of a power MOSFET are called
A.	emitter, base, collector
B.	source, gate, drain
C.	source, base, drain
D.	emitter, gate, drain
Answer» C. source, base, drain

Discussion

461.	Which of the following is same in AM and FM receivers?
A.	Demodulator
B.	AGC
C.	IF amplifier
D.	All of the above
Answer» D. All of the above

Discussion

462.	A notch filter is sometimes used in communication receivers to
A.	reduce receiver gain at some specific frequency
B.	increase receiver gain at some specific frequency
C.	made selectivity more precise
D.	spread the bandwidth
Answer» B. increase receiver gain at some specific frequency

Discussion

463.	Which one of the following is not a useful quantity for comparing the noise performance of receivers?
A.	Noise figure
B.	Noise temperature
C.	Input noise voltage
D.	Equivalent noise resistance
Answer» D. Equivalent noise resistance

Discussion

464.	DC amplifiers have a tendency to be unstable.
A.	True
B.	False
Answer» B. False

Discussion

465.	An amplifier with loop gain A will be more stable for value of A as
A.	0.95
B.	0.7
C.	1.2
D.	1.5
Answer» C. 1.2

Discussion

466.	Study the circuit of figure and examine the following statements It is an active low pass finer. It is a second order filter. The change in gain is 40 dB/decade. Which of the above statements are correct?
A.	1, 2 and 3
B.	1 and 2
C.	1 and 3
D.	2 and 3
Answer» B. 1 and 2

Discussion

467.	In a circuit of figure, V_s = 10 cos( t) power drawn by the 2&ohm; resistor is 4 watts. The power factor is
A.	0.3
B.	0.4
C.	0.6
D.	none
Answer» D. none

Discussion

468.	A bridge rectifier circuit has input of 50 Hz frequency. The load resistance is R_L and filter capacitance is C. For good output wave shape, the time constant R_LC should be at least equal to
A.	10 ms
B.	20 ms
C.	50 ms
D.	100 ms
Answer» E.

Discussion

469.	A CB amplifier has r_e = 6 &ohm;, R_L = 600 &ohm; and a = 0.98. The voltage gain is
A.	100
B.	600 x 0.98
C.	98
D.	6
Answer» D. 6

Discussion

470.	Figure shows the self bias circuit for CE amplifier and its equivalent circuit. V_BB and R_B respectively are
A.	10 V and 4 k ohm
B.	5 V and 4 k ohm
C.	2 V and 4 k ohm
D.	2 V and 10 k ohm
Answer» D. 2 V and 10 k ohm

Discussion

471.	S_i transistor of following figure has a = 0.9 and I_CE= 0, V_EE = 5 V and V_CC = 13 V, then R_E will be if I_EQ = 1 mA
A.	3 k&ohm;
B.	4 k&ohm;
C.	5 k&ohm;
D.	4.3 k&ohm;
Answer» E.

Discussion

472.	In class C operation of an amplifier circuit, the collector current exists for
A.	360 of input wave
B.	180 of input wave
C.	more than 180 of input wave
D.	less than 180 of input wave
Answer» E.

Discussion

473.	The 'h' parameters of the circuit shown in the figure are h_ib = 25 &ohm;, h_fb = 0.999 and h_ob = 10^-6&ohm; The Voltage gain is
A.	0.99
B.	1.98
C.	2.0
D.	4
Answer» E.

Discussion

474.	In figure the saturation collector current is
A.	<img src="/_files/images/electronics-and-communication-engineering/analog-electronics/320-290-2.png">
B.	<img src="/_files/images/electronics-and-communication-engineering/analog-electronics/320-290-3.png">
C.	<img src="/_files/images/electronics-and-communication-engineering/analog-electronics/320-290-4.png">
D.	none of the above
Answer» D. none of the above

Discussion

475.	Consider the following statements : A clamper circuit adds or subtracts a dc voltage to a waveform does not change the waveform amplifiers the waveform Which are correct?
A.	1, 2
B.	1, 3
C.	1, 2, 3
D.	2, 3
Answer» B. 1, 3

Discussion

476.	A forward voltage of 9 V is applied to a diode in series with a 1 k&ohm; load resistor. The voltage across load resistor is zero. It indicates that
A.	diode is short circuited
B.	diode is open circuited
C.	resistor is open circuited
D.	diode is either short circuited or open circuited
Answer» C. resistor is open circuited

Discussion

477.	Which power amplifier can deliver maximum load power?
A.	Class A
B.	Class AB
C.	Class B
D.	Class C
Answer» E.

Discussion

478.	Assertion (A): An ideal rectifier should have unity harmonic factor Reason (R): An ideal rectifier should have unity displacement factor.
A.	Both A and R are correct and R is correct explanation of A
B.	Both A and R correct but R is not correct explanation of A
C.	A is correct but R is wrong
D.	A is wrong but R is correct
Answer» E.

Discussion

479.	A single phase half wave rectifier is feeding a resistive load. When a = 0, dc output voltage is 127 V. When a = 30 , the dc output voltage will be about
A.	127 V
B.	120 V
C.	110 V
D.	100 V
Answer» C. 110 V

Discussion

480.	Assertion (A): A TRIAC is a bidirectional SCR. Reason (R): A TRIAC is a four layers 3 terminal device and can conduct in both directions.
A.	Both A and R are correct and R is correct explanation of A
B.	Both A and R correct but R is not correct explanation of A
C.	A is correct but R is wrong
D.	A is wrong but R is correct
Answer» B. Both A and R correct but R is not correct explanation of A

Discussion

481.	The selectivity of a radio receiver is
A.	its ability to reject adjacent unwanted signals
B.	its ability to amplify weak signals
C.	the frequency at which it gives maximum amplification to signal.
D.	its ability to suppress noise.
Answer» B. its ability to amplify weak signals

Discussion

482.	If the intermediate frequency of a superheterodyne receiver falls within the tuning range of the receiver
A.	Unsuitability will occur
B.	Heterodyne whistles will be heard
C.	Tuning to the frequency band immediately adjacent to the intermediate frequency will become impossible
D.	All of the above
Answer» E.

Discussion

483.	EM 84 tube is used in radio receivers as
A.	audio amplifier
B.	RF amplifier
C.	full wave rectifier
D.	magic eye
Answer» E.

Discussion

484.	Which of the following statement about receivers is false?
A.	Double conversion is used to improve image rejection
B.	Double conversion is used to improve selectivity
C.	Variable sensitivity is used to improve selectivity
D.	Variable sensitivity is used to eliminate selective fading
Answer» E.

Discussion

485.	Mechanical impedance is the ratio of
A.	rms force to rms velocity
B.	rms force to rms displacement
C.	rms velocity to rms displacement
D.	none of the above
Answer» B. rms force to rms displacement

Discussion

486.	A cycloconverter can be
A.	step down
B.	step up
C.	step down or step up
D.	none of the above
Answer» D. none of the above

Discussion

487.

Match the following:
List I (Logic) List II (Characteristic)
A. RTL 1. High fan out
B. CMOS 2. Highest speed of operation
C. I²L 3. High noise immunity
D. ECL 4. Lowest product of power and delay

A.

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

B.

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

C.

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

D.

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

Answer» D. A-3, B-4, C-1, D-2

Discussion

488.

Match the following:
List I (Amplifier coupling) List II (Feature)
A. RC 1. High voltage gain and impedance matching
B. Inductive 2. Ability to amplify dc and low frequency signals
C. Transformer 3. Minimum non-linear distortion
D. Direct 4. Low collector supply voltage can be used

A.

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

B.

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

C.

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

D.

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

Answer» C. A-1, B-2, C-3, D-4

Discussion

489.

Match the following:
List I List II
A. Ampere's Law 1.
B. Faraday's Law 2.
C. Gauss's Law 3.
D. Free Space 4.

A.

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

B.

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

C.

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

D.

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

Answer» E.

Discussion

490.

Match the following:
List I (Operator) List II (Description)
A. & & 1. Bitwise inclusive OR
B. & 2. Bitwise AND
C. | | 3. Logical AND
D. | 4. Logical OR

A.

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

B.

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

C.

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

D.

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

Answer» C. A-2, B-3, C-1, D-4

Discussion

491.

Match the following:
List I List II
A. bit 1. 10
B. nat 2. e
C. decit 3. 2

A.

A-1, B-2, C-3

B.

A-1, B-3, C-2

C.

A-3, B-2, C-1

D.

A-2, B-3, C-1

Answer» D. A-2, B-3, C-1

Discussion

492.

Match the following:
List I List II
A. Multiplexer 1. Sequential memory
B. De-multiplexer 2. Converts decimal number to binary
C. Shift register 3. Data selector
D. Encoder 4. Routes single input to many outputs

A.

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

B.

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

C.

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

D.

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

Answer» B. A-4, B-3, C-1, D-2

Discussion

493.

Match the following:
List I (Location of characteristics roots) List II (System characteristic)
A. (- 1 + j), (- 1 - j) 1. Marginally stable
B. (- 2 + j), (- 2 - j), (2, j) (- 2, j) 2. Unstable
C. - j, j - 1, 1 3. Stable

A.

A-1, B-2, C-3

B.

A-2, B-3, C-1

C.

A-3, B-1, C-2

D.

A-1, B-3, C-2

Answer» D. A-1, B-3, C-2

Discussion

494.

Match the following:
List I List II
A. SUS 1.
B. SBS 2.
C. SCS 3.
D. Shockley diode 4.

A.

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

B.

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

C.

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

D.

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

Answer» E.

Discussion

495.

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.

A-2, B-3, C-5

B.

A-4, B-3, C-5

C.

A-1, B-2, C-3

D.

A-2, B-4, C-1

Answer» C. A-1, B-2, C-3

Discussion

496.

Match the following:
List I (Electron spin) List II (Phenomenon)
A. 1. Antiferromagnetism
B. 2. Ferrimagnetism
C. 3. Ferromagnetism

A.

A-1, B-2, C-3

B.

A-3, B-2, C-1

C.

A-2, B-3, C-1

D.

A-3, B-1, C-2

Answer» E.

Discussion

497.

Match the following:
List I List II
A. Coastals receiver 1. VSB
B. Stereo-multiplexing 2. Demodulating DSB-SC
C. TV broad casting 3. FM radio broad casting
4. Slope overload
5. Matched filter

A.

A-1, B-3, C-2

B.

A-2, B-3, C-1

C.

A-2, B-1, C-4

D.

A-4, B-3, C-1

Answer» C. A-2, B-1, C-4

Discussion

498.

Match the following:
List I List II
A. NPN transistor 1.
B. PNP transistor 2.
C. n channel JFET 3.
D. p channel JFET 4.

A.

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

B.

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

C.

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

D.

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

Answer» D. A-1, B-2, C-4, D-3

Discussion

499.

Match the following:
List I (Functional headings of instruction set of 8085) List II (Functions performed)
A. Branch group 1. Compares, rotates etc.
B. Logic group 2. Moves, loads, stores etc.
C. Data transfer group 3. Initiates conditional or unconditional jumps, calls etc.

A.

A-1, B-2, C-3

B.

A-2, B-3, C-1

C.

A-3, B-1, C-2

D.

A-1, B-3, C-2

Answer» D. A-1, B-3, C-2

Discussion

500.

Match the following:
List I List II
A. Former 1. Produces deflecting torque
B. Coil 2. Provides base for coil
C. Core 3. Makes the magnetic field radial
D. Spring 4. Provides controlling torque

A.

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

B.

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

C.

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

D.

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

Answer» C. A-1, B-2, C-4, D-3

Discussion

Explore topic-wise MCQs in Engineering.

Thyristors are not suitable for logic circuits.

In a single phase full wave converter (M-2 connection) feeding on R - L load, the input voltage is v = Vm sin t. The expression for dc output voltage is

A thyristor has a turn on time of 6 s. If the anode circuit is inductive, the turn on time will be

Assertion (A): A transistor requires a continuous base signal for conduction but a thyristor requires a gate pulse.Reason (R): Transistor find widespread application in power electronic circuits.

A single phase half wave rectifier is feeding a resistive load. Input voltage v = Vm sin t. The output dc voltage is Vdc and output rms voltage is Vrms . If firing angle is 180 , Vdc and Vrms respectively are

A dc separately excited motor has constant field current. The armature is fed from a single phase supply through a full converter. When a = 0, speed is 500 rpm. If a = 45 , the speed is likely to be

In a multiphase chopper, all choppers operate together.

Assertion (A): The surge current which an SCR can withstand is much higher than rms on state current.Reason (R): The duration of surge current is very small.

In superheterodyne receivers, the local oscillator is used to

The terminals of a power MOSFET are called

Which of the following is same in AM and FM receivers?

A notch filter is sometimes used in communication receivers to

Which one of the following is not a useful quantity for comparing the noise performance of receivers?

DC amplifiers have a tendency to be unstable.

An amplifier with loop gain A will be more stable for value of A as

Study the circuit of figure and examine the following statements It is an active low pass finer.It is a second order filter.The change in gain is 40 dB/decade. Which of the above statements are correct?

In a circuit of figure, Vs = 10 cos( t) power drawn by the 2&ohm; resistor is 4 watts. The power factor is

A bridge rectifier circuit has input of 50 Hz frequency. The load resistance is RL and filter capacitance is C. For good output wave shape, the time constant RLC should be at least equal to

A CB amplifier has re = 6 &ohm;, RL = 600 &ohm; and a = 0.98. The voltage gain is

Figure shows the self bias circuit for CE amplifier and its equivalent circuit. VBB and RB respectively are

Si transistor of following figure has a = 0.9 and ICE= 0, VEE = 5 V and VCC = 13 V, then RE will be if IEQ = 1 mA

In class C operation of an amplifier circuit, the collector current exists for

The 'h' parameters of the circuit shown in the figure are hib = 25 &ohm;, hfb = 0.999 and hob = 10-6&ohm; The Voltage gain is

In figure the saturation collector current is

Consider the following statements : A clamper circuit adds or subtracts a dc voltage to a waveformdoes not change the waveformamplifiers the waveform Which are correct?

A forward voltage of 9 V is applied to a diode in series with a 1 k&ohm; load resistor. The voltage across load resistor is zero. It indicates that

Which power amplifier can deliver maximum load power?

Assertion (A): An ideal rectifier should have unity harmonic factorReason (R): An ideal rectifier should have unity displacement factor.

A single phase half wave rectifier is feeding a resistive load. When a = 0, dc output voltage is 127 V. When a = 30 , the dc output voltage will be about

Assertion (A): A TRIAC is a bidirectional SCR.Reason (R): A TRIAC is a four layers 3 terminal device and can conduct in both directions.

The selectivity of a radio receiver is

If the intermediate frequency of a superheterodyne receiver falls within the tuning range of the receiver

EM 84 tube is used in radio receivers as

Which of the following statement about receivers is false?

Mechanical impedance is the ratio of

A cycloconverter can be

Match the following: List I (Logic) List II (Characteristic) A.RTL1.High fan outB.CMOS2.Highest speed of operationC.I2L3.High noise immunityD.ECL4.Lowest product of power and delay

Match the following: List I (Amplifier coupling) List II (Feature) A.RC1.High voltage gain and impedance matchingB.Inductive2.Ability to amplify dc and low frequency signalsC.Transformer3.Minimum non-linear distortionD.Direct4.Low collector supply voltage can be used

Match the following: List I List II A.Ampere's Law1.B.Faraday's Law2.C.Gauss's Law3.D.Free Space4.

Match the following: List I (Operator) List II (Description) A.& &1.Bitwise inclusive ORB.&2.Bitwise ANDC.| |3.Logical ANDD.|4.Logical OR

Match the following: List I List II A.bit1.10B.nat2.eC.decit3.2

Match the following: List I List II A.Multiplexer1.Sequential memoryB.De-multiplexer2.Converts decimal number to binaryC.Shift register3.Data selectorD.Encoder4.Routes single input to many outputs

Match the following: List I (Location of characteristics roots) List II (System characteristic)A.(- 1 + j), (- 1 - j)1.Marginally stableB.(- 2 + j), (- 2 - j), (2, j) (- 2, j)2.UnstableC.- j, j - 1, 13.Stable

Match the following: List I List II A.SUS1.B.SBS2.C.SCS3.D.Shockley diode4.

Match the following: List I (Instruction) List II (Flag's getting affected)A.ORI1.CY resetB.DAA2.CY reset and AC resetC.PCHIL3.S, Z, AC, P, CY flags affected 4.S, S, P are modified 5.No flags affected

Match the following: List I (Electron spin) List II (Phenomenon) A. 1.AntiferromagnetismB. 2.FerrimagnetismC. 3.Ferromagnetism

Match the following: List I List II A.Coastals receiver1.VSBB.Stereo-multiplexing2.Demodulating DSB-SCC.TV broad casting3.FM radio broad casting 4.Slope overload 5.Matched filter

Match the following: List I List II A.NPN transistor1.B.PNP transistor2.C.n channel JFET3.D.p channel JFET4.

Match the following: List I (Functional headings of instruction set of 8085) List II (Functions performed)A.Branch group1.Compares, rotates etc.B.Logic group2.Moves, loads, stores etc.C.Data transfer group3.Initiates conditional or unconditional jumps, calls etc.

Match the following: List I List II A.Former1.Produces deflecting torqueB.Coil2.Provides base for coilC.Core3.Makes the magnetic field radialD.Spring4.Provides controlling torque

In a single phase full wave converter (M-2 connection) feeding on R - L load, the input voltage is v = V_m sin t. The expression for dc output voltage is

Assertion (A): A transistor requires a continuous base signal for conduction but a thyristor requires a gate pulse.
Reason (R): Transistor find widespread application in power electronic circuits.

A single phase half wave rectifier is feeding a resistive load. Input voltage v = V_m sin t. The output dc voltage is V_dc and output rms voltage is V_rms . If firing angle is 180 , V_dc and V_rms respectively are

Assertion (A): The surge current which an SCR can withstand is much higher than rms on state current.
Reason (R): The duration of surge current is very small.

Study the circuit of figure and examine the following statements

It is an active low pass finer.
It is a second order filter.
The change in gain is 40 dB/decade.
Which of the above statements are correct?

In a circuit of figure, V_s = 10 cos( t) power drawn by the 2&ohm; resistor is 4 watts. The power factor is

A bridge rectifier circuit has input of 50 Hz frequency. The load resistance is R_L and filter capacitance is C. For good output wave shape, the time constant R_LC should be at least equal to

A CB amplifier has r_e = 6 &ohm;, R_L = 600 &ohm; and a = 0.98. The voltage gain is

Figure shows the self bias circuit for CE amplifier and its equivalent circuit. V_BB and R_B respectively are

S_i transistor of following figure has a = 0.9 and I_CE= 0, V_EE = 5 V and V_CC = 13 V, then R_E will be if I_EQ = 1 mA

The 'h' parameters of the circuit shown in the figure are h_ib = 25 &ohm;, h_fb = 0.999 and h_ob = 10^-6&ohm; The Voltage gain is

Consider the following statements : A clamper circuit
adds or subtracts a dc voltage to a waveform
does not change the waveform
amplifiers the waveform
Which are correct?

Assertion (A): An ideal rectifier should have unity harmonic factor
Reason (R): An ideal rectifier should have unity displacement factor.

Assertion (A): A TRIAC is a bidirectional SCR.
Reason (R): A TRIAC is a four layers 3 terminal device and can conduct in both directions.

Match the following:
List I (Logic) List II (Characteristic)
A. RTL 1. High fan out
B. CMOS 2. Highest speed of operation
C. I²L 3. High noise immunity
D. ECL 4. Lowest product of power and delay

Match the following:
List I (Amplifier coupling) List II (Feature)
A. RC 1. High voltage gain and impedance matching
B. Inductive 2. Ability to amplify dc and low frequency signals
C. Transformer 3. Minimum non-linear distortion
D. Direct 4. Low collector supply voltage can be used

Match the following:
List I List II
A. Ampere's Law 1.
B. Faraday's Law 2.
C. Gauss's Law 3.
D. Free Space 4.

Match the following:
List I (Operator) List II (Description)
A. & & 1. Bitwise inclusive OR
B. & 2. Bitwise AND
C. | | 3. Logical AND
D. | 4. Logical OR

Match the following:
List I List II
A. bit 1. 10
B. nat 2. e
C. decit 3. 2

Match the following:
List I List II
A. Multiplexer 1. Sequential memory
B. De-multiplexer 2. Converts decimal number to binary
C. Shift register 3. Data selector
D. Encoder 4. Routes single input to many outputs

Match the following:
List I (Location of characteristics roots) List II (System characteristic)
A. (- 1 + j), (- 1 - j) 1. Marginally stable
B. (- 2 + j), (- 2 - j), (2, j) (- 2, j) 2. Unstable
C. - j, j - 1, 1 3. Stable

Match the following:
List I List II
A. SUS 1.
B. SBS 2.
C. SCS 3.
D. Shockley diode 4.

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

Match the following:
List I (Electron spin) List II (Phenomenon)
A. 1. Antiferromagnetism
B. 2. Ferrimagnetism
C. 3. Ferromagnetism

Match the following:
List I List II
A. Coastals receiver 1. VSB
B. Stereo-multiplexing 2. Demodulating DSB-SC
C. TV broad casting 3. FM radio broad casting
4. Slope overload
5. Matched filter

Match the following:
List I List II
A. NPN transistor 1.
B. PNP transistor 2.
C. n channel JFET 3.
D. p channel JFET 4.

Match the following:
List I (Functional headings of instruction set of 8085) List II (Functions performed)
A. Branch group 1. Compares, rotates etc.
B. Logic group 2. Moves, loads, stores etc.
C. Data transfer group 3. Initiates conditional or unconditional jumps, calls etc.

Match the following:
List I List II
A. Former 1. Produces deflecting torque
B. Coil 2. Provides base for coil
C. Core 3. Makes the magnetic field radial
D. Spring 4. Provides controlling torque