Question is ⇒ A class E chopper, Options are ⇒ (A) can operate in second quadrant only, (B) can operate in first or third quadrant, (C) can operate in all the four quadrants, (D) can operate in either second or third quadrant, (E) , Leave your comments or Download question paper.

Question is ⇒ A class E chopper, Options are ⇒ (A) can operate in second quadrant only, (B) can operate in first or third quadrant, (C) can operate in all the four quadrants, (D) can operate in either second or third quadrant, (E) , Leave your comments or Download question paper. Previous question Next question


Q1.	A class E chopper
A.	can operate in second quadrant only [Wrong Answer]
B.	can operate in first or third quadrant [Wrong Answer]
C.	can operate in all the four quadrants [Correct Answer]
D.	can operate in either second or third quadrant [Wrong Answer]
View Answer 1 -1 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 :

⇒ In which amplifier circuit is gate conductance negligible?
JFET amplifier
MOSFET amplifier
Both JFET and MOSFET amplifier
None of the above

⇒ In a 4 input OR gate, the total number of High outputs for the 16 input states are
16
15
14
13

⇒ The merging of a hole and an electron is called
recombination
covalent bonding
thermal union
none of the above

⇒ Thermosetting polymers are
injection moulded
extruded
cast moulded
none of the above

⇒ In a single-stage RC coupled common emitter amplifier, the phase shift at the lower 3 dB frequency is
zero
135°
180°
225°

⇒ If A = 10 + j then log_eA is
14.14 ∠45°
200 ∠45°
2.65 + j45°
2.65 + j0.785

⇒ Three point tracking can be achieved with
gang condenser
variable selectivity
paddar capacitor
any of the above

⇒ Three resistance of 15 Ω each are connected in delta. The resistance of equivalent star will have a value of
15 Ω
5 Ω
5/3 Ω
45 Ω

⇒ The number of pins in microprocessor 8086 is
30
40
50
60

⇒ If the ladder reference voltage is 2 V, then minimum comparator resolution required is
0.125 V
1.25 V
12.5 V
0

⇒ In a purely capacitive circuit, the current __________ the voltage by __________ .
lags, 0°
leads, 90°
lags, 90°
lags, 45°

⇒ In a common emitter BJT amplifier, the maximum usable supply voltage is limited by
avalanche Beakdown of Base-Emitter junction
collector emitter breakdown voltage with base open(βV_CEO)
collector emitter breakdown voltage with emitter open(βV_CEO)
zener break down voltage of the emitter base junction

⇒ With a variable reluctance tachometer having 60 rotor teeth the count reads 3600 counts per minute. The speed in RPM is
36
60
360
3600

⇒ Which of the following power amplifiers has highest efficiency?
Class A
Class AB
Class B
Class C

⇒ Pulse modulation is used in
radio navigation
automatic landing equipment
data communications
all of the above

⇒ Which of the following is a balanced line?
Coaxial line
Strip line
Microstrip line
TV twin lead

⇒ Which of the following types of noise assumes greater importance at high frequencies?
Transit time noise
Shot noise
Impulse noise
Random noise

⇒ In measuring resistance using voltmeter and ammeter, the resistances of voltmeter and ammeter also affect the accuracy of measurement.
TRUE
FALSE

⇒ In a 3 input NAND gate, the number of states in which output is 1 equals
8
1
6
5

⇒ As frequency increases, the transmission efficiency
decreases
increases
is not affected
either (a) or (c)

⇒ The proper exponential form of - 0.0032 in FORTRAN 77 is
-3.2 E - 3
-0.0032
-0.00032 EI
-0.032 E - 1

⇒ In tape recorder erase head is active during recording.
TRUE
FALSE

⇒ In an AM transmitter after the modulation stage, class C amplifier
can be used
cannot be used
may be used, but it has no use
can't be determine to use

⇒ A waveguide operated below cut off frequency can be used as
phase shifter
an attenuator
an isolator
none

⇒ Figure shows an RC circuit. The magnitude plot V₂/V_{1will rise exponentially to R₂/(R₁ + R₂) as ω → ∞
will rise linearly to R₂/(R₁ + R₂) as ω → ∞
will decrease to zero as ω → ∞
will rise 1 at ω = 0 and then decrease as ω → ∞}

⇒ The boundary conditions at the interface between two dielectrics in an electric field are given by
D_normal = 0, E_tangential = 0
D_normal = 0, E_normal = 0
D_tangential = 0, E_tangential = 0
D_tangential = 0, E_normal = 0

⇒ An amplifier has an input resistance of 10 kΩ and the noise voltage is 10 μV. If two such resistances of 10 kΩ each are connected in series at the input, the total noise voltage is about
20 μV
5μV
14.14 μV
10 μV

⇒ A parallel RLC network has R = 4Ω, L = 4H, C = 0.25F. Then at resonance Q =
1
10
20
40

⇒ In which of these does thermionic emission occur?
LED
LCD
VF display
None

⇒

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