MCQOPTIONS
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MCQOPTIONS
This section includes 40 Mcqs, each offering curated multiple-choice questions to sharpen your ENGINEERING SERVICES EXAMINATION (ESE) knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The use of _____ instruments is merely confined within laboratories as stand¬ardizing instruments. |
| A. | indicating |
| B. | absolute |
| C. | integrating |
| D. | recording |
| Answer» C. integrating | |
| 2. |
A moving-coil permanent-magnet instrument can be used as _____ by using a low resistance shunt. |
| A. | voltmeter |
| B. | ammeter |
| C. | ballistic galvanometer |
| D. | flux-meter |
| Answer» C. ballistic galvanometer | |
| 3. |
Which of the following is an essential part of a motor meter ? |
| A. | A braking device |
| B. | An operating torque system |
| C. | All of the above |
| D. | Revolution registering device |
| Answer» D. Revolution registering device | |
| 4. |
Which of the following meters are not used on D.C. circuits |
| A. | Commutator motor meters |
| B. | Mercury motor meters |
| C. | None of the above |
| D. | Induction meters |
| Answer» E. | |
| 5. |
Thermal compensation can be provided in a Wheatstone bridge by ________ |
| A. | using more than one resistive sensor |
| B. | making use of a heat sink |
| C. | using cooling fans |
| D. | immersing the circuit into a liquid |
| Answer» B. making use of a heat sink | |
| 6. |
One of the simplest applications of a Wheatstone bridge is ________ |
| A. | voltage measurement |
| B. | current measurement |
| C. | light measurement |
| D. | power measurement |
| Answer» D. power measurement | |
| 7. |
By using the variations on a Wheatstone bridge we can |
| A. | measure quantities such as voltage, current and power |
| B. | measure high resistance values |
| C. | measure quantities such as complex power |
| D. | measure quantities such as capacitance, inductance and impedance |
| Answer» E. | |
| 8. |
How can a Wheatstone bridge be used for the measurement of physical parameters? |
| A. | in conjunction with a rectifier |
| B. | along with an op amp |
| C. | by connecting it to a thermistor |
| D. | by making use of a transducer |
| Answer» C. by connecting it to a thermistor | |
| 9. |
The types of faults in a telephone line are ________ |
| A. | line to line or line to ground |
| B. | triple line to line or line to ground |
| C. | open circuit and short circuit |
| D. | symmetrical and unsymmetrical |
| Answer» B. triple line to line or line to ground | |
| 10. |
Telephone companies make use of the Wheatstone bridge for _________ |
| A. | measuring the telephone resistance |
| B. | computing the line strength |
| C. | maintaining dialtone |
| D. | locating the cable faults |
| Answer» E. | |
| 11. |
Wheatstone bridge is used to measure the d.c. resistance of various types of wires for |
| A. | determining their effective resistance |
| B. | computing the power dissipation |
| C. | quality control of wire |
| D. | maintaining a source of constant e.m.f |
| Answer» D. maintaining a source of constant e.m.f | |
| 12. |
Wheatstone bridge is used to measure resistance in the range of ________ |
| A. | 1Ω to a few megaohms |
| B. | 10kΩ to a few megaohms |
| C. | 100MΩ to a few gegaohms |
| D. | 100Ω to a few teraohms |
| Answer» B. 10kΩ to a few megaohms | |
| 13. |
Wheatstone bridge is a __________ |
| A. | a.c. bridge |
| B. | d.c. bridge |
| C. | high voltage bridge |
| D. | power dissipation bridge |
| Answer» C. high voltage bridge | |
| 14. |
What is the relation between the sensitivity and deflection for a galvanometer? |
| A. | directly proportional |
| B. | inversely proportional |
| C. | independant of each other |
| D. | independant of each other |
| Answer» B. inversely proportional | |
| 15. |
Sensitivity is expressed in |
| A. | cm/A |
| B. | m/mA |
| C. | mm/µA |
| D. | inch/nA |
| Answer» D. inch/nA | |
| 16. |
Sensitivity is defined as _________ |
| A. | amount of voltage per unit current |
| B. | amount of power per unit voltage |
| C. | amount of resistance per unit voltage |
| D. | amount of deflection per unit current |
| Answer» E. | |
| 17. |
Amount of deflection of the galvanometer depends on _________ |
| A. | resistance of the ratio arms |
| B. | sensitivity |
| C. | current flowing through the bridge |
| D. | emf across the circuit |
| Answer» C. current flowing through the bridge | |
| 18. |
Wheatstone bridge works on the principle of ________ |
| A. | full deflection |
| B. | partial deflection |
| C. | no deflection |
| D. | null deflection |
| Answer» E. | |
| 19. |
What is connected between the two ends of a Wheatstone bridge? |
| A. | current and voltage source |
| B. | ammeter and voltmeter |
| C. | battery and galvanometer |
| D. | ohmmeter and wattmeter |
| Answer» D. ohmmeter and wattmeter | |
| 20. |
The opposite two ends of a Wheatstone bridge consist of _________ |
| A. | voltage and current source |
| B. | e.m.f and null detector |
| C. | resistance and capacitance |
| D. | inductance and impedance |
| Answer» C. resistance and capacitance | |
| 21. |
A galvanometer is used as a _________ |
| A. | current source |
| B. | voltage source |
| C. | null detector |
| D. | input impedance |
| Answer» D. input impedance | |
| 22. |
Wheatstone bridge consists of _________ |
| A. | 4 resistive arms |
| B. | 2 resistive arms |
| C. | 6 resistive arms |
| D. | 8 resistive arms |
| Answer» B. 2 resistive arms | |
| 23. |
What are the physical parameters that are to be controlled when a bridge is used in control applications? |
| A. | area and volume |
| B. | mass and weight |
| C. | pressure and temperature |
| D. | current and voltage |
| Answer» D. current and voltage | |
| 24. |
In control applications, one arm of the bridge circuit contains a _________ |
| A. | capacitive element |
| B. | resistive element |
| C. | inductive element |
| D. | impedance element |
| Answer» C. inductive element | |
| 25. |
Commonly used D.C. bridges are _________ |
| A. | Schering and Anderson |
| B. | Maxwell inductance and capacitance |
| C. | Maxwell inductance and capacitance |
| D. | Wheatstone and Kelvin |
| Answer» E. | |
| 26. |
The bridge circuit can be used in _________ |
| A. | high voltage circuits |
| B. | low power circuits |
| C. | control circuits |
| D. | digital integrated circuits |
| Answer» D. digital integrated circuits | |
| 27. |
How is the measurement accuracy in a bridge circuit? |
| A. | high |
| B. | low |
| C. | medium |
| D. | inaccurate |
| Answer» B. low | |
| 28. |
The simplest type of bridge used for the measurement of medium resistances is known as |
| A. | Kelvin |
| B. | Schering |
| C. | Anderson |
| D. | Wheatstone |
| Answer» E. | |
| 29. |
What happens to the balance condition, if the source and detector are interchanged? |
| A. | increases by a factor of 2 |
| B. | reduces to half |
| C. | remains unchanged |
| D. | independent of the type of source and detector |
| Answer» D. independent of the type of source and detector | |
| 30. |
Accuracy of bridge circuit depends on _________ |
| A. | component values |
| B. | null detector |
| C. | voltage source |
| D. | current source |
| Answer» B. null detector | |
| 31. |
What is used to characterise single port devices, multiport devices etc? |
| A. | current values |
| B. | impedance values |
| C. | voltage values |
| D. | power values |
| Answer» C. voltage values | |
| 32. |
D.C. bridges are used for _________ |
| A. | measurement of resistance |
| B. | measurement of capacitance |
| C. | measurement of current |
| D. | measurement of inductance |
| Answer» B. measurement of capacitance | |
| 33. |
Relationship at balance condition between the component values of the four arms of a bridge is known as |
| A. | full load condition |
| B. | open circuit condition |
| C. | short circuit condition |
| D. | balancing condition |
| Answer» E. | |
| 34. |
When is the bridge circuit balanced ? |
| A. | When voltage is applied |
| B. | When current flows through the opposite ends of the bridge circuit |
| C. | When no current flows through the galvanometer |
| D. | When impedance is minimum |
| Answer» D. When impedance is minimum | |
| 35. |
The accuracy of a bridge depends on the _________ |
| A. | null indicator |
| B. | bridge components |
| C. | current source |
| D. | voltage source |
| Answer» C. current source | |
| 36. |
The principle on which a bridge circuit operates is |
| A. | null indication |
| B. | ampere’s rule |
| C. | partial indication |
| D. | kirchhoff’s laws |
| Answer» B. ampere’s rule | |
| 37. |
A bridge circuit uses which method of measurement ? |
| A. | absolute |
| B. | relative |
| C. | differential |
| D. | comparison |
| Answer» E. | |
| 38. |
What is applied to the two opposite junctions of a bridge circuit |
| A. | source of voltage |
| B. | source of current |
| C. | source of power |
| D. | source of impedance |
| Answer» C. source of power | |
| 39. |
A simple bridge circuit consists of a network of __________ |
| A. | 3 resistance arms |
| B. | 2 resistance arms |
| C. | 4 resistance arms |
| D. | 6 resistance arms |
| Answer» D. 6 resistance arms | |
| 40. |
A bridge circuit is used for the measurement of the following components: |
| A. | Resistance, capacitance and inductance |
| B. | Diode, triode and thyristor |
| C. | Transistor, thermistor and antenna |
| D. | LED, op amp and transducer |
| Answer» B. Diode, triode and thyristor | |