Users Also Read
MCQ's Search Engine
Electrical Engineering
Mechanical Engineering
Civil Engineering
Automobile Engineering
Chemical Engineering
Computer Engineering
Electronics Engineering
Medical Science Engg
A single phase energy meter has the rating 1200 resolutions/ kWh. If a 500 W electric gadget is used for 4 hours, the energy meter will make | |
A. | 1200 revolutions [Wrong Answer] |
B. | 1800 revolutions [Wrong Answer] |
C. | 2100 revolutions [Wrong Answer] |
D. | 2400 revolutions [Correct Answer] |
View Answer
Explanation:-
Answer : D Discuss it below : !! OOPS Login [Click here] is required to post your answer/result |
Also Read Similar Questions Below :
⇒ For a NOR SR latch the normal resting state of inputs is
S = R = 1
S = 0, R = 1
S = 0, R = 0
S = 1, R = 0
⇒ ROC of sequence x[n] = (3)^{n} ∪[n] + (4)^{n} ∪[- n - 1]
|z| > 4
3 < |z| < 4
|z| < 4
|z| > 3
⇒
A-1, B-3, C-2, D-4
A-2, B-1, C-4, D-3
A-3, B-1, C-2, D-4
A-4, B-1, C-2, D-3
⇒ The reactance of coupling capacitors, for DC quantities, is
zero
low
infinite
zero or low
⇒ The inductance of a single layer solenoid of 10 turns is 5 μH. Which one of the following is the correct value of inductance when the number of turns is 20 and the length is doubled.
10 μH
20 μH
40 μH
5 μH
⇒ DVD uses
Laser beam for both recording and playback
Laser beam for recording and video head for playback
Video head for recording and laser beam for playback
None of the above
⇒ Which of the following could be the equation for non-linear resistor shown in figu
a + be + ce^{2} + de^{3}
a - be - ce^{2} - de^{3}
a + be + ce^{2} - de^{3}
a + be - ce^{2} - de^{3}
⇒ The mass of proton and electron are
1.672 x 10^{-26} kg and 9.107 x 10^{-31} kg respectively
9.107 x 10^{-26} kg and 9.107 x 10^{-31} kg respectively
9.107 x 10^{-29} kg and 9.107 x 10^{-31} kg respectively
9.107 x 10^{-30} kg and 9.107 x 10^{-31} kg respectively
⇒ A 4 bit parallel type A/D converter uses a 6 volt reference. How many comparators are required and what is the resolution in volts?
0.375 V
15 V
4.5 V
10 V
⇒ In an SSB transmitter one is most likely to find
class C audio amplifier
tuned modulator
class B RF amplifier
class AB power amplifier
⇒ For a standard 2nd order system the maximum overshoot is 10% to an unit step input. If the magnitude of the input is doubled, then maximum overshoot and percentage of maximum overshoot is:
maximum overshoot doubles and percentage of maximum overshoot is less than double
maximum overshoot doubles and percentage of maximum overshoot do not change
maximum overshoot remain same and percentage of maximum overshoot is double
maximum overshoot more than double and percentage of maximum overshoot is less than double
⇒ Highest value of autocorrelation function 100 sin 50 pt is
50
zero
100
100/p
⇒ In radar system if the antenna diameter is increased by a factor of 4, the minimum range will increased by a factor of
1
2
22
4
⇒
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
⇒ In a CE amplifier the ac cut off voltage is 9 V and slope of ac load line is - 0.5 mA/V. The ac saturation current is
9 mA
4.5 mA
3 mA
18 mA
⇒ If A is 1011, A" is
1011
100
1100
1010
⇒ Which of the following quantities cannot be measured/determined using Hall effect?
Type of semiconductor (p or n)
Mobility of charge carriers
Diffusion constant
Carrier concentration
⇒ In figure, the value of R shoul
5 kΩ
50 kΩ
20 kΩ
10 kΩ
⇒ To couple a coaxial line to a parallel wire line it is best to use
slotted line
balun
directional coupler
λ/4 transformer
⇒ The total number of fundamental products of three variables is
3
5
8
16
⇒ The difference between phase and frequency modulation
is purely of academic interest
lies in the different definitions of the modulation index
lies in the poor audio response of phase modulation
is too great to make the two systems compatible
⇒
Both A and R are correct and R is correct explanation for A
Both A and R are correct but R is not correct explanation for A
A is correct R is wrong
A is wrong R is correct
⇒ A pure tone at 1000 Hz has a dB level of 50 dB. If two such tones exist simultaneously the dB level is about
50 dB
53 dB
100 dB
200 dB
⇒ Quantizing error occurs in
TDM
FDM
PCM
PWD
⇒ The value of current at resonance in series R-L-C circuit is affected by the value of
C
L
R
all of the above
⇒ In PM, without any modulation, all the transmitted pulses have the same
amplitude
width
amplitude and spacing
amplitude, spacing and width
⇒ Which of them radiates emission?
LED only
LCD only
Both LED and LCD
Neither LED nor LCD
⇒ One commercial unit of energy is equal to
1 watt-sec
1 kilowatt-sec
1 kilowatt-hour
One watt-hour
⇒ In 8085 eight address and data buses are multiplexed.
TRUE
FALSE
⇒
A-2, B-5, C-1, D-3
A-3, B-1, C-2, D-5
A-1, B-2, C-3, D-4
A-5, B-2, C-4, D-1
⇒ For a NOR SR latch the normal resting state of inputs is
S = R = 1
S = 0, R = 1
S = 0, R = 0
S = 1, R = 0
⇒ ROC of sequence x[n] = (3)^{n} ∪[n] + (4)^{n} ∪[- n - 1]
|z| > 4
3 < |z| < 4
|z| < 4
|z| > 3
⇒
Match the following:
List I (Octal) | List II (Hexadecimal) | ||
---|---|---|---|
A. | 66 | 1. | 3 F |
B. | 77 | 2. | 36 |
C. | 55 | 3. | 27 |
D. | 47 | 4. | 3D |
A-1, B-3, C-2, D-4
A-2, B-1, C-4, D-3
A-3, B-1, C-2, D-4
A-4, B-1, C-2, D-3
⇒ The reactance of coupling capacitors, for DC quantities, is
zero
low
infinite
zero or low
⇒ The inductance of a single layer solenoid of 10 turns is 5 μH. Which one of the following is the correct value of inductance when the number of turns is 20 and the length is doubled.
10 μH
20 μH
40 μH
5 μH
⇒ DVD uses
Laser beam for both recording and playback
Laser beam for recording and video head for playback
Video head for recording and laser beam for playback
None of the above
⇒ Which of the following could be the equation for non-linear resistor shown in figu
a + be + ce^{2} + de^{3}
a - be - ce^{2} - de^{3}
a + be + ce^{2} - de^{3}
a + be - ce^{2} - de^{3}
⇒ The mass of proton and electron are
1.672 x 10^{-26} kg and 9.107 x 10^{-31} kg respectively
9.107 x 10^{-26} kg and 9.107 x 10^{-31} kg respectively
9.107 x 10^{-29} kg and 9.107 x 10^{-31} kg respectively
9.107 x 10^{-30} kg and 9.107 x 10^{-31} kg respectively
⇒ A 4 bit parallel type A/D converter uses a 6 volt reference. How many comparators are required and what is the resolution in volts?
0.375 V
15 V
4.5 V
10 V
⇒ In an SSB transmitter one is most likely to find
class C audio amplifier
tuned modulator
class B RF amplifier
class AB power amplifier
⇒ For a standard 2nd order system the maximum overshoot is 10% to an unit step input. If the magnitude of the input is doubled, then maximum overshoot and percentage of maximum overshoot is:
maximum overshoot doubles and percentage of maximum overshoot is less than double
maximum overshoot doubles and percentage of maximum overshoot do not change
maximum overshoot remain same and percentage of maximum overshoot is double
maximum overshoot more than double and percentage of maximum overshoot is less than double
⇒ Highest value of autocorrelation function 100 sin 50 pt is
50
zero
100
100/p
⇒ In radar system if the antenna diameter is increased by a factor of 4, the minimum range will increased by a factor of
1
2
22
4
⇒
Match the following:
List I (Logic) | List II (Characteristic) | ||
---|---|---|---|
A. | RTL | 1. | High fan out |
B. | CMOS | 2. | Highest speed of operation |
C. | I^{2}L | 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
⇒ In a CE amplifier the ac cut off voltage is 9 V and slope of ac load line is - 0.5 mA/V. The ac saturation current is
9 mA
4.5 mA
3 mA
18 mA
⇒ If A is 1011, A" is
1011
100
1100
1010
⇒ Which of the following quantities cannot be measured/determined using Hall effect?
Type of semiconductor (p or n)
Mobility of charge carriers
Diffusion constant
Carrier concentration
⇒ In figure, the value of R shoul
5 kΩ
50 kΩ
20 kΩ
10 kΩ
⇒ To couple a coaxial line to a parallel wire line it is best to use
slotted line
balun
directional coupler
λ/4 transformer
⇒ The total number of fundamental products of three variables is
3
5
8
16
⇒ The difference between phase and frequency modulation
is purely of academic interest
lies in the different definitions of the modulation index
lies in the poor audio response of phase modulation
is too great to make the two systems compatible
⇒
Assertion (A): In a push pull circuit each transistor stays in the active region for one half cycle
Reason (R): A push pull amplifier has low distortion
Both A and R are correct and R is correct explanation for A
Both A and R are correct but R is not correct explanation for A
A is correct R is wrong
A is wrong R is correct
⇒ A pure tone at 1000 Hz has a dB level of 50 dB. If two such tones exist simultaneously the dB level is about
50 dB
53 dB
100 dB
200 dB
⇒ Quantizing error occurs in
TDM
FDM
PCM
PWD
⇒ The value of current at resonance in series R-L-C circuit is affected by the value of
C
L
R
all of the above
⇒ In PM, without any modulation, all the transmitted pulses have the same
amplitude
width
amplitude and spacing
amplitude, spacing and width
⇒ Which of them radiates emission?
LED only
LCD only
Both LED and LCD
Neither LED nor LCD
⇒ One commercial unit of energy is equal to
1 watt-sec
1 kilowatt-sec
1 kilowatt-hour
One watt-hour
⇒ In 8085 eight address and data buses are multiplexed.
TRUE
FALSE
⇒
Match the following:
List I | List II | ||
---|---|---|---|
A. | lag compensation | 1. | Exterior of unit circle |z| = 1 |
B. | lead compensation | 2. | PD control |
C. | stability | 3. | Non-minimum phase |
D. | Instability | 4. | Left half s plane |
5. | PI control |
A-2, B-5, C-1, D-3
A-3, B-1, C-2, D-5
A-1, B-2, C-3, D-4
A-5, B-2, C-4, D-1