Current can be measured effectively by making use of ____
1.d.c. voltmeter
2.a.c. ammeter
3.d.c. ammeter
4.a.c. voltmeter
Posted Date:-2022-05-06 05:05:11
Energy meter can be directly used in measurement.
1.True
2.False
3.all of the above
4.None of the mentioned
Posted Date:-2022-05-05 06:08:24
Input impedance depends on _____
1.resistance
2.capacitance
3.inductance
4. voltage
Posted Date:-2022-05-06 05:02:47
Low voltage signals can be measured by _______
1.amplifiers
2. transformers
3. transformers
4.voltmeters
Posted Date:-2022-05-06 04:58:21
Preliminary light load adjustment involves _______
1.applying rated voltage across current coil
2.making use of a light load
3.applying rated voltage across pressure coil
4.adjusting the light load
Posted Date:-2022-05-05 06:09:11
Sensitivity is of the order of ______
1. MV
2. V
3.GV
4.mV
Posted Date:-2022-05-06 05:08:38
Voltage ranges in a meter are _____
1. 5-10-15
2.20-50-100
3.0.5-1-1.5
4.1-3-10
Posted Date:-2022-05-06 05:03:39
What is the effect of the input on the transistor Q2?
1.bias on Q2 decreases
2. bias on Q2 is constant
3. bias on Q2 is zero
4.bias on Q2 increases
Posted Date:-2022-05-06 04:59:59
A rotating phase sequence indicator consists of _____
1.1 coil
2.2 coils
3. 5 coils
4.3 coils
Posted Date:-2022-05-05 06:15:26
An electronic energy meter is advantageous compared to conventional ones.
1.True
2.False
3.all of the above
4.None of the mentioned
Posted Date:-2022-05-05 06:08:07
An electronic energy meter makes use of ______
1.IC
2.Transformer
3.CRO
4.Multimeter
Posted Date:-2022-05-05 06:05:15
Analog signal is converted _______
1. into oscillations
2. into digital
3.into pulses
4.into current
Posted Date:-2022-05-05 06:07:48
At high frequencies the capacitive reactance ____
1.is constant
2. increases
3.decreases
4.becomes zero
Posted Date:-2022-05-06 05:03:14
Average power is _______
1.product of voltage and current
2.product of average current and voltage
3.product of instantaneous voltage and current
4.product of absolute voltage and current
Posted Date:-2022-05-05 06:06:11
Average responding voltmeter is cheap and accurate.
1.True
2.False
3.all of the above
4.None of the mentioned
Posted Date:-2022-05-06 05:05:31
Basic circuit of multimeter consists ______
1.of a.c. amplifier
2. of d.c. amplifier
3.operational amplifier
4. power amplifier
Posted Date:-2022-05-06 05:10:16
Bridge is balanced by ______
1. galvanometer
2.oscillator
3.zero adjustment resistor
4.head phone
Posted Date:-2022-05-06 04:59:35
Creep adjustment involves _____
1.adjusting the creep
2.exciting the current coil
3.adjusting the turns ratio
4.exciting the pressure coil
Posted Date:-2022-05-05 06:09:40
Creeping in an energy meter can be found using ______
1.creep adjustment
2.preliminary light load adjustment
3.full load u.p.f adjustment
4. light load adjustment
Posted Date:-2022-05-05 06:08:48
Decibel covers a small range of values.
1. True
2.False
3.all of the above
4.None of the mentioned
Posted Date:-2022-05-06 05:04:22
Disc rotation is determined by ____
1.the supply voltage
2. an arrow
3.the turns ratio
4.the load current
Posted Date:-2022-05-05 06:17:00
Eddy e.m.f produces a torque.
1.True
2.False
3.all of the above
4.None of the mentioned
Posted Date:-2022-05-05 06:16:32
Electronic multimeter measures ______
1.voltage, current and resistance
2.voltage, current and resistance
3.current and power
4.energy and power
Posted Date:-2022-05-06 05:09:50
Excitation of the three coils produces _____
1.a static magnetic field
2.a rotating magnetic field
3. a static electric field
4. a rotating electric field
Posted Date:-2022-05-05 06:16:14
Frequency of oscillation in an electronic energy meter depends on ______
1. output current of multiplier
2. output voltage of multiplier
3.output power of multiplier
4.input resistance of multiplier
Posted Date:-2022-05-05 06:07:26
Full load u.p.f adjustment involves ______
1.adjusting the loads at unity power factor
2.applying rated voltage to pressure coil and a p.f. of unity for current coil
3.only applying rated voltage to pressure coil
4.only a p.f. of unity for the current coil
Posted Date:-2022-05-05 06:11:04
High range can be obtained in a basic D.C. electronic voltmeter by ________
1. a transformer
2.an attenuator
3.a transducer
4.a resistor
Posted Date:-2022-05-06 05:00:45
How many types of phase sequence indicators are there?
1.1
2.5
3.2
4.10
Posted Date:-2022-05-05 06:15:01
Input impedance of a voltmeter is ______
1.high
2.low
3.medium
4.zero
Posted Date:-2022-05-06 05:02:20
Input impedance of an electronic voltmeter is _____
1. low
2.high
3.medium
4. zero
Posted Date:-2022-05-06 04:58:47
Light load adjustment involves ________
1.applying rated voltage across the pressure coil
2.adjusting a light load
3.applying rated current across the transformer
4.applying rated voltage across the current coil
Posted Date:-2022-05-05 06:10:06
Linear meter with 1% accuracy must have ______
1.100 divisions
2.50 divisions
3. 200 divisions
4.500 divisions
Posted Date:-2022-05-06 05:04:06
Low power factor adjustment involves _____
1.adjusting the power factor at lower loads
2.applying rated voltage to pressure coil and a p.f. of 0.5 for current coil
3.only applying rated voltage to pressure coil
4.only a p.f. of 0.5 for the current coil
Posted Date:-2022-05-05 06:10:34
Measurement of energy involves _____
1.inductance and capacitance measurement
2.power consumption and time duration
3. resistance measurement and voltage drop
4. current consumption and voltage drop
Posted Date:-2022-05-05 06:05:45
Measurement of heat power ________
1.uses a heat sink
2. uses a thermometer
3.uses a thermocouple
4.uses a black body
Posted Date:-2022-05-06 05:06:58
Meter can be isolated from the circuit in a basic D.C. electronic voltmeter.
1.True
2.False
3.all of the above
4.None of the mentioned
Posted Date:-2022-05-06 04:59:06
Meter reading is obtained by _____
1.sensing voltage
2. sensing heat power
3.sensing current
4. sensing resistance
Posted Date:-2022-05-06 05:06:36
Noise is a function of ______
1. voltage
2.current
3.bandwidth
4.frequency
Posted Date:-2022-05-06 05:04:45
Overloading is ________
1.damages the meter
2. increases the temperature
3.doesn’t affect the meter
4.decreases the sensitivity
Posted Date:-2022-05-06 05:01:28
Phase sequence indicator gives the maximum value of phase voltages.
1.True
2. False
3.all of the above
4.None of the mentioned
Posted Date:-2022-05-05 06:14:11
R.M.S value means ______
1.root mean square
2.rate mean second
3.root median second
4.rate mode second
Posted Date:-2022-05-06 05:06:13
Response of thermocouples is fast.
1.True
2.False
3.all of the above
4.None of the mentioned
Posted Date:-2022-05-06 05:08:56
Sensitivity of electronic voltmeter is high.
1. True
2.False
3.all of the above
4.None of the mentioned
Posted Date:-2022-05-06 05:01:01
Sufficient heating of the heater is ensured by ______
1.increasing the temperature
2. making use of induction coil
3.amplifying d.c. input
4.amplifying a.c. input
Posted Date:-2022-05-06 05:07:23
Synchronization of A.C. supply means ________
1.different phase sequence
2.same phase sequence
3.zero phase
4.using a transformer
Posted Date:-2022-05-05 06:14:41
The three coils are _____
1.star connected
2.delta connected
3.not connected
4.shorted
Posted Date:-2022-05-05 06:15:49
What is basic range of a meter?
1.causes maximum deflection
2.causes minimum deflection
3.causes zero deflection
4.causes medium deflection
Posted Date:-2022-05-06 05:00:21
What is the main disadvantage of a true r.m.s responding voltmeter?
1. presence of transducer
2.presence of thermocouple
3.presence of transformer
4.presence of oscillator
Posted Date:-2022-05-06 05:07:52
What is the naming convention for the two thermocouples?
1.thermocouple 1 and thermocouple 2
2. input thermocouple and output thermocouple
3.measuring thermocouple and balancing thermocouple
4.internal thermocouple and external thermocouple
Posted Date:-2022-05-06 05:08:15
What is the role of a multiplier?
1. it multiplies the voltage and current
2.divides the alternating voltage and current
3.supplies instantaneous voltage and current
4.multiplies alternating voltage and current
Posted Date:-2022-05-05 06:06:59