Question is ⇒ The frequency at which phase angle is 180° is called, Options are ⇒ (A) phase crossover frequency, (B) stability limit frequency, (C) frequency of limited stability, (D) gain margin frequency, (E) , Leave your comments or Download question paper.

Question is ⇒ The frequency at which phase angle is 180° is called, Options are ⇒ (A) phase crossover frequency, (B) stability limit frequency, (C) frequency of limited stability, (D) gain margin frequency, (E) , Leave your comments or Download question paper. Previous question Next question


Q1.	The frequency at which phase angle is 180° is called
A.	phase crossover frequency [Correct Answer]
B.	stability limit frequency [Wrong Answer]
C.	frequency of limited stability [Wrong Answer]
D.	gain margin frequency [Wrong Answer]
View Answer 1 -1 Explanation:- Answer : A 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 :

⇒ A carrier wave carries information.
TRUE
FALSE

⇒ ROC of sequence x[n] = δ[n] is
Not exist
z = 0
Entire Plane
Entire Plane expect z = 0, z = ∞

⇒

Match the following:

	List I		List II
A.	Serial Binary adder	1.	(2n - 1)t_pd
B.	Ripple carry adder	2.	(n - 1)t_pd
C.	Carry look ahead binary adder	3.	Operation time independent of size
		4.	6t_pd for 4 bit carry look ahead adder

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

⇒ In an inverting amplifier using op-amp the current input to the inverting terminal
is equal to the current through feedback resistance
is less than the current through feedback resistance
is more than the current through feedback resistance
may be equal to, less or more than current through feedback resistance

⇒ Impedance inversion may be obtained with
a short circuited stub
a quarter wave line
an open circuited stub
a half wave line

⇒ Frequency shifting keying is basically a method involving
amplitude modulation
frequency modulation
phase modulation
none of the above

⇒ Spontaneous magnetisation is characteristic of ferromagnetic materials.
TRUE
FALSE

⇒ Among the logic families, the family which can be used at very high frequency greater than 100 MHz in a 4 bit synchronous counter is
TTL
CMOS
ECL
TTLLS

⇒ In case of surface waves the field strength at a point is directly proportional to
antenna height
wave frequency
current of the antenna
distance of the point from the antenna

⇒ The time constant of the circuit after the switch shown in the figure is opene
0.2 s
5 s
0.1 s
dependent on R and hence cannot be determined unless R is known

⇒ A message signal with bandwidth 10 kHz is lower sideband SSB modulated with carrier frequency f_c1 = 10⁶ Hz. The resulting signal is then passed though a narrow band frequency modulator with carrier frequency f_c2 = 10⁹ Hz. The bandwidth of the output would be
4 x 10⁴ Hz
2 x 10⁶ Hz
2 x 10⁹ Hz
2 x 10¹⁰ Hz

⇒ If a transistor is operating with both of its Junctions forward biased, but with the collector base forward biased, but with the collector base forward bias greater than the emitter-base forward bias, then it is operating in the
forward active mode
reverse saturation mode
reverse active mode
forward saturation mode

⇒ The time required for horizontal blanking is 16% of that for each horizontal line. If horizontal time is 63.5 μs, the horizontal blanking time for each line is about
1 μs
10 μs
100 μs
none of the above

⇒ The silicon sample with unit cross-sectional area shown below is in thermal equilibrium. The following information is given: T = 300 K, electronic charge = 1.6 x 10^-19C, thermal voltage = 26mV and electron mobility = 1350 cm²
2.16 x 10⁴ A/cm²
1.08 x 10⁴ A/cm²
4.32 x 10³ A/cm²
6.48 x 10² A/cm²

⇒ A dc network has an open circuit voltage of 5 V. When its terminals are short circuited a current of 5 A flows through the short circuit. If the short circuit is removed and a resistance of 1.5 Ω is connected across its terminals, the current will be
0.0416666666666667
0.0833333333333333
2.5 A
0.208333333333333

⇒ A zinc carbon cell is a primary cell.
TRUE
FALSE

⇒ In a bipolar transistor, emitter efficiency is about
0.99
0.9
0.8
0.7

⇒ The addition of a zero to the open loop transfer function
pulls the root locus to the left and makes the system more stable
pulls the root locus to the right and makes the system less stable
either (a) or (b)
neither (a) nor (b)

⇒ For BJT, under saturation condition
I_C = βI_B
I_C > bI_B
I_C is independent of all other parameters
I_C < βI_B

⇒ Poynting vector signifies which of the following?
Power density vector producing electrostatic field
Power density vector producing electromagnetic field
Current density vector producing electrostatic field
Current density vector producing electromagnetic field

⇒ The mean life time of the minority carriers is in the range of a few
seconds
milli seconds
micro seconds
nano seconds

⇒ In a bipolar transistor which current is largest
collector current
base current
emitter current
base current or emitter current

⇒

Match the following:

	List I (DOS commands)		List II (Meaning)
A.	DBLSPACE	1.	Deletes a director and its sub-directories
B.	MEM	2.	Displays the amount of used and free memory
C.	SYS	3.	Put a copy of DOS on disk
D.	DELTREE	4.	Compresses files to increase the storage capacity of disc

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

⇒ The minimum step size required for a Delta modulator operating at 36 samples/sec to track the signal (here u(t) is the unit step function) x(t) = 125t (u(t) - u(t - 1)) + (250 - 125t) (u(t - 1) - u(t - 2)) So that slope overload is avoided, would be
2^-10
2^-8
2^-6
2^-4

⇒ As the atoms of rare gases become larger, electronic polarizability
increases
decreases
remains the same
may increase or decrease

⇒ The percentage saving in power of 100% modulated suppressed carrier AM signal is
100
75
66.6
50

⇒ A plane electromagnetic wave travels in dielectric medium of relative permittivity 9. Relative to free space, the velocity of propagation in the dielectric is
increased by a factor of 9
increased by a factor of 3
unchanged
reduced by a factor of 1/3

⇒ In a reverse biased P-N junction, the current through the junction increases abruptly at
zero voltage
1.2 V
0.72 V
breakdown voltage

⇒

Assertion (A): A good algorithm should be fast, require minimal computer memory and time.

Reason (R): Many times an algorithm is prepared in the form of a flow chart.

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

⇒ In a CD player the laser uses
silicon semiconductor
silicon/germanium semiconductor
aluminium gallium arsenide semiconductor
none of the above