EC Engineering Measurements and Instrumentation Online Test Series
Electronics and Communication Engineering Measurements and Instrumentation Online Test
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Electronics and Communication Engineering Measurements and Instrumentation Online Test. Electronics and Communication Engineering Question and Answers in English. The Electronics and Communication Engineering Full online mock test paper is free for all students and Very Helpful for Exam Preparation. Electronics and Communication Engineering Online Mock test for Electronics and Communication Engineering Measurements and Instrumentation Topic. Here we are providing Electronics and Communication Engineering Measurements and Instrumentation Online Test Series in English. Check Electronics and Communication Engineering Mock Test Series 2019.
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- Question 1 of 30
To increase Q factor of a coil, the wire should beCorrectIncorrect
- Question 2 of 30
An ammeter of 0-25 A range has a guaranteed accuracy of 1% of full scale reading. The current measured is 5 A. The limiting error isCorrectIncorrect
- Question 3 of 30
The coil of a moving iron instrument has a resistance of 500 Ω and an inductance of 1 H. It reads 250 V when a 250 V dc is applied. If series resistance is 2000 Ω, its reading when fed by 250 V, 50 Hz ac will beCorrectIncorrect
- Question 4 of 30
In 3 phase power measurement by two wattmeter method, the reading of one wattmeter is zero. The power factor of load isCorrectIncorrect
- Question 5 of 30
In a CRO which of the following is not a part of electron gunCorrectIncorrect
- Question 6 of 30
Which of the following voltmeters would you use for measuring voltage across 20 kΩ resistance?CorrectIncorrect
- Question 7 of 30
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 makeCorrectIncorrect
- Question 8 of 30
Assertion (A): De sauty’s bridge is suitable only for pure capacitor.
Reason (R): Capacitors are mostly perfect.CorrectIncorrect
- Question 9 of 30
In which of the transformer is the secondary nearly short circuited under normal operating conditions?CorrectIncorrect
- Question 10 of 30
A moving coil instrument has a resistance of 0.6 Ω and full scale deflection at 0.1 A. To convert it into an ammeter of 0-15 A range, the resistance of shunt should beCorrectIncorrect
- Question 11 of 30
A piezoelectric force transducer has a charge sensitivity of 20 pC/N. It is connected to a charge amplifier and overall gain of transducer and amplifier is 50 mV/N. The gain of amplifier isCorrectIncorrect
- Question 12 of 30
An LVDT is used to measure displacement. The LVDT feeds a Voltmeter of 0-5 V range through a 250 gain amplifier. For a displacement 0.5 mm the output of LVDT is 2 mV. The sensitivity of instrument isCorrectIncorrect
- Question 13 of 30
Assertion (A): When a wattmeter is used for low impedance loads, the pressure coil is connected across the load.
Reason (R): A wattmeter measures apparent power.CorrectIncorrect
- Question 14 of 30
As per BIS there are 6 accuracy classes of instruments.CorrectIncorrect
- Question 15 of 30
In a ballistic galvanometer, a charge of 100 μC gives a first swing of 25°. The charge required to cause first swing of 50° isCorrectIncorrect
- Question 16 of 30
In a strain measuring device using a strain gauge, the output quantity isCorrectIncorrect
- Question 17 of 30
The angle δ for a mica capacitor is aboutCorrectIncorrect
- Question 18 of 30
A digital voltmeter has a read out range from 0 to 999 counts. If the full scale reading is 9.999 V, the resolution isCorrectIncorrect
- Question 19 of 30
Consider the following statements: In a differential amplifier using JFET, the differential output offset is due to
1.mismatch between FET parameters
2.difference in values of resistances used in circuit
3.variation in supply voltage.
Of the statements, the correct statements areCorrectIncorrect
- Question 20 of 30
A meter with a resistance of 100 Ω and a full scale deflection of current of 1 mA is to be converted into voltmeter of 0 – 5 V range. The multiplier resistance should beCorrectIncorrect
- Question 21 of 30
The household energy meter isCorrectIncorrect
- Question 22 of 30
A standard cell of 1.0185 V is used with a slide wire potentiometer. The balance was obtained at 60 cm. When an unknown emf was connected, the balance was obtained at 82 cm. The magnitude of unknown emf isCorrectIncorrect
- Question 23 of 30
A moving coil instrument has a resistance of 0.5 Ω and a full scale deflection of 0.1 A. To convert it into an ammeter of 0-10 A the shunt resistance should beCorrectIncorrect
- Question 24 of 30
Potentiometer method of dc voltage measurement is more accurate than direct measurement using a voltmeter becauseCorrectIncorrect
- Question 25 of 30
Assertion (A): A hot wire ammeter has a cramped scale.
Reason (R): The heat is proportional to square of current.CorrectIncorrect
- Question 26 of 30
Which of the following is true about an impulse voltage?CorrectIncorrect
- Question 27 of 30
Which of the following are needed both for protection and metering?CorrectIncorrect
- Question 28 of 30
A digital frequency counter can be converted to DVM by addition of a suitableCorrectIncorrect
- Question 29 of 30
A dynamometer wattmeter is connected in ac circuit. The reading will beCorrectIncorrect
- Question 30 of 30
The speed transducer using a drag cup rotor has the main advantage ofCorrectIncorrect