Users Also Read
MCQ's Search Engine
Electrical Engineering
Mechanical Engineering
Civil Engineering
Automobile Engineering
Chemical Engineering
Computer Engineering
Electronics Engineering
Medical Science Engg
In 180° mode of operation of a 3 phase bridge inverter, two thyristors conduct at one time. | |
A. | TRUE [Wrong Answer] |
B. | FALSE [Correct Answer] |
View Answer
Explanation:-
Answer : B Discuss it below : !! OOPS Login [Click here] is required to post your answer/result |
Also Read Similar Questions Below :
⇒ The slope of log-magnitude asymptote changes by - 40 dB/ decade at a frequency ω_{1}. This means that
a double pole is present
a pair of complex conjugate poles is present
either a double pole or a pair of complex conjugate poles is present
a pole or zero at origin is present
⇒ The IF bandwidth of a radar receiver is inversely proportional to
pulse interval
pulse width
PRF
none of the above
⇒ Which of the following noise becomes of great importance at high frequencies?
Shot noise
Agitation noise
Flicker noise
Transit time noise
⇒ In a Parallel connection of circuit the bandwidth in terms of R, L, C is
B = 1/RC
B = 1/RL
B = 1/RLC
B = RLC
⇒
A-1, B-5, C-8, D-7
A-6, B-5, C-3, D-2
A-1, B-5, C-4, D-2
A-1, B-3, C-4, D-7
⇒ Super high frequency means more than 3000 MHz.
TRUE
FALSE
⇒
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 correct R is wrong
A is wrong R is correct
⇒ The following switching functions are to be implemented using a decoder
2 to 4 line
3 to 8 line
4 to 16 line
5 to 32 line
⇒ The main advantage of CMOS circuit is
high gain
high output impedance
low power consumption
high gain and high output impedance
⇒ The Sun blots out the transmission of a geosynchronous satellite twice a year when satellite passes directly in front of it. This outage lasts for about
10 minutes on 5 consecutive days
5 minutes on 10 consecutive days
30 minutes for 5 consecutive days
one hour for 5 consecutive days
⇒ A Weinbridge oscillator is a
VHF oscillator
RF oscillator
microwave oscillator
audio frequency oscillator
⇒ Consider the following statements about root locus
1, 2 and 3
1 and 2 only
1 only
2 and 3 only
⇒ For the Infix expression A + B - C + D the Postfix notation is
AB + C - D +
+ AB - C + D
AB - C + D
None of the above
⇒ When a current flows through a conductor,
an electric field exists at all points within the conductor
electric field exists only at all points on the surface of the conductor
electric field exists only at ends of the conductor
any of the above depending on magnitude of current
⇒
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 correct R is wrong
A is wrong R is correct
⇒ A sinusoidal voltage has peak to peak value of 100 V. The rms value is
50 V
70.7 V
35.35 V
141.41 V
⇒ In 2 out of 5 code, decimal number 8 is
11000
10100
11000
1010
⇒ Which has the highest power dissipation per gate?
ECL
TTL
CMOS
PMOS
⇒ Transfer function of a certain system
2 sec
4 sec
6 sec
8 sec
⇒ The inputs to a 3 bit binary adder are 111_{2} and 110_{2}. The output will be
101
1101
1111
1110
⇒ Which of the following is invariably found in SSB?
Tuned modulator
Class B, RF amplifier
Class C, audio amplifier
All of the above
⇒ Two ammeters A and B are connected in parallel in a circuit carrying 100 A. Their resistances are 0.8 mΩ. Their readings will be.
55.56 and 44.44 A respectively
44.44 A and 55.56 A respectively
60 A and 40 A respectively
40 A and 60 A respectively
⇒ The function Z(s) has a pole at infinity if
the degree of numerator and denominator of Z(s) are equal
the numerator of Z(s) is one degree higher than denominator
the denominator of Z(s) is one degree higher than numerator
the degree of numerator and denominator are either equal or differ by one
⇒ In a CE amplifier circuit, the output voltage
is very small
is always constant
depends on β
none of the above
⇒ Bandwidth will be
a.b
a + b
a
b
⇒
A-1, B-2, C-3, D-4
A-3, B-4, C-1, D-2
A-1, B-4, C-3, D-2
A-3, B-2, C-1, D-4
⇒
Both A and R are true and R is correct explanation of A
Both A and R are true and R is not the correct explanation of A
A is true but R is false
A is false but R is true
⇒ A differential amplifier consists of two CB amplifiers.
TRUE
FALSE
⇒ A(A + B) =
A
A B
AB
AB
⇒ The normalised form of 1.81 x 10^{-11} is
18.1 x 10^{-12}
18.1 x 10^{-13}
0.181 x 10^{-10}
0.0181 x 10^{-9}
⇒ The slope of log-magnitude asymptote changes by - 40 dB/ decade at a frequency ω_{1}. This means that
a double pole is present
a pair of complex conjugate poles is present
either a double pole or a pair of complex conjugate poles is present
a pole or zero at origin is present
⇒ The IF bandwidth of a radar receiver is inversely proportional to
pulse interval
pulse width
PRF
none of the above
⇒ Which of the following noise becomes of great importance at high frequencies?
Shot noise
Agitation noise
Flicker noise
Transit time noise
⇒ In a Parallel connection of circuit the bandwidth in terms of R, L, C is
B = 1/RC
B = 1/RL
B = 1/RLC
B = RLC
⇒
Match the following:
List I | List II | ||
---|---|---|---|
A. | Poles and zeros of lie an real axis driving point LC network | 1. | lie an real axis |
B. | Canonic LC network has | 2. | a zero |
C. | The number of Canonic networks for the given driving point function | 3. | minimum number of elements |
D. | The first critical frequency nearest the origin for RL driving point impedance | 4. | four |
5. | minimum number of elements | ||
6. | alternate | ||
7. | either a pole or zero | ||
8. | three |
A-1, B-5, C-8, D-7
A-6, B-5, C-3, D-2
A-1, B-5, C-4, D-2
A-1, B-3, C-4, D-7
⇒ Super high frequency means more than 3000 MHz.
TRUE
FALSE
⇒
Assertion (A): In microprocessor 8085 instruction LXIB, 90 FF H means register B and C are loaded with upper and lower bytes to get B = 90 H and C = FFH.
Reason (R): In 8085 the stack pointer indicates which memory location is to accessed.
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 correct R is wrong
A is wrong R is correct
⇒ The following switching functions are to be implemented using a decoder
- f_{1} = ∑m (1, 2, 4, 8, 10, 14)
- f_{2} = ∑m (2, 5, 9, 15)
- f_{3} = ∑m (2, 4, 5, 6, 7)
2 to 4 line
3 to 8 line
4 to 16 line
5 to 32 line
⇒ The main advantage of CMOS circuit is
high gain
high output impedance
low power consumption
high gain and high output impedance
⇒ The Sun blots out the transmission of a geosynchronous satellite twice a year when satellite passes directly in front of it. This outage lasts for about
10 minutes on 5 consecutive days
5 minutes on 10 consecutive days
30 minutes for 5 consecutive days
one hour for 5 consecutive days
⇒ A Weinbridge oscillator is a
VHF oscillator
RF oscillator
microwave oscillator
audio frequency oscillator
⇒ Consider the following statements about root locus
- The intersection of root locus branches with the imaginary axis can be determined by the use of Routh criterion
- Segments of real axis having an odd number of real axis open loop poles plus zeros to their right are not parts of root locus
- The number of root locus branches terminating on infinity is always zero
1, 2 and 3
1 and 2 only
1 only
2 and 3 only
⇒ For the Infix expression A + B - C + D the Postfix notation is
AB + C - D +
+ AB - C + D
AB - C + D
None of the above
⇒ When a current flows through a conductor,
an electric field exists at all points within the conductor
electric field exists only at all points on the surface of the conductor
electric field exists only at ends of the conductor
any of the above depending on magnitude of current
⇒
Assertion (A): Dynamic RAM needs refreshing.
Reason (R): Capacitors tend to loose charge.
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 correct R is wrong
A is wrong R is correct
⇒ A sinusoidal voltage has peak to peak value of 100 V. The rms value is
50 V
70.7 V
35.35 V
141.41 V
⇒ In 2 out of 5 code, decimal number 8 is
11000
10100
11000
1010
⇒ Which has the highest power dissipation per gate?
ECL
TTL
CMOS
PMOS
⇒ Transfer function of a certain system
2 sec
4 sec
6 sec
8 sec
⇒ The inputs to a 3 bit binary adder are 111_{2} and 110_{2}. The output will be
101
1101
1111
1110
⇒ Which of the following is invariably found in SSB?
Tuned modulator
Class B, RF amplifier
Class C, audio amplifier
All of the above
⇒ Two ammeters A and B are connected in parallel in a circuit carrying 100 A. Their resistances are 0.8 mΩ. Their readings will be.
55.56 and 44.44 A respectively
44.44 A and 55.56 A respectively
60 A and 40 A respectively
40 A and 60 A respectively
⇒ The function Z(s) has a pole at infinity if
the degree of numerator and denominator of Z(s) are equal
the numerator of Z(s) is one degree higher than denominator
the denominator of Z(s) is one degree higher than numerator
the degree of numerator and denominator are either equal or differ by one
⇒ In a CE amplifier circuit, the output voltage
is very small
is always constant
depends on β
none of the above
⇒ Bandwidth will be
a.b
a + b
a
b
⇒
Match the following:
List I (Comm.services) | List II (Bandwidth) | ||
---|---|---|---|
A. | AM broadcast | 1. | 10 kHz |
B. | Telephone | 2. | 4 kHz |
C. | wide-band FM | 3. | 200 kHz |
D. | TV | 4. | 7 MHz |
A-1, B-2, C-3, D-4
A-3, B-4, C-1, D-2
A-1, B-4, C-3, D-2
A-3, B-2, C-1, D-4
⇒
Assertion (A): For a physically realisable driving point function, the degree of numerator and denominator should be equal.
Reason (R): The sum of positive real functions is real.
Both A and R are true and R is correct explanation of A
Both A and R are true and R is not the correct explanation of A
A is true but R is false
A is false but R is true
⇒ A differential amplifier consists of two CB amplifiers.
TRUE
FALSE
⇒ A(A + B) =
A
A B
AB
AB
⇒ The normalised form of 1.81 x 10^{-11} is
18.1 x 10^{-12}
18.1 x 10^{-13}
0.181 x 10^{-10}
0.0181 x 10^{-9}