Measurements and Instrumentation Test - Online Electronics and Communication Engineering Test

Instruction:

This is a FREE online test. Beware of scammers who ask for money to attend this test.
Total number of questions: 20.
Time allotted: 30 minutes.
Each question carries 1 mark; there are no negative marks.
DO NOT refresh the page.
All the best!

Marks : 2/20

Total number of questions

Number of answered questions

Number of unanswered questions

Test Review : View answers and explanation for this test.

In 3 phase power measurement by two wattmeter method, both wattmeters had equal reading. The power factor of load is

0.5 lagging

0.5 leading

[#]

Which of the following is not correct in respect of electrostatic instrument?

It is essentially a voltmeter

It is suitable for only high voltages

It has a uniform scale

It can be used for both ac and dc

[#]

The emf of a Weston cell is 1.286 V.

True

False

[#]

If A = 131 ± 4 and B = 106 ± 4, the percentage range of doubt in A - B is

16%

32%

[#]

Two resistance R₁ and R₂ are connected in series R₁ = 528 ± 5 Ω and R₂ = 325 ± 3Ω. The total resistance will be

853 ± 2 Ω

853 ± 5 Ω

853 ± 3 Ω

853 ± 8 Ω

[#]

Wheatstone bridge is suitable for low resistances.

True

False

[#]

A 3-digit voltmeter having a resolution of 100 mV can be used to measure a maximum of

100 V

200 V

1000 V

5000 V

[#]

A megger has a hand driven dc generator.

True

False

[#]

The gauge factor of a semiconductor strain gauge is about

100

1000

[#]

10.

Assertion (A): Absolute instruments are used in standard laboratories.

Reason (R): Absolute instruments do not require calibration.

Both A and R are true and R is correct explanation of A

Both A and R are true but R is not correct explanation of A

A is true R is false

A is false R is true

[#]

11.

In indicating instruments the controlling torque is provided by a spring.

True

False

[#]

12.

The damping ratio, in D'Arsonval galvanometer is equal to

[#]

13.

The dimensions of permittivity are

L^-3M^-1T²Q²

L^-1M^-1T²Q²

L²MT^-1Q^-1

L^-2M^-1T²Q²

[#]

14.

Which of the following can be used for measuring capacitance?

De sauty bridge

Maxwell's bridge

Anderson bridge

Hay's bridge

[#]

15.

The pressure coil of a wattmeter should be connected to the supply side of the current coil when

load impedance in high

load impedance is low

voltage is high

voltage is low

[#]

16.

Induction wattmeter is an absolute instrument.

True

False

[#]

17.

Crompton potentiometer has

14 coils and a slide wire all having the same resistance

14 coils and a slide wire but the resistance of slide wire is half that of each coil

14 coils each of different resistance

14 coils out of which 7 coils have resistance which is twice that of remaining 7 coils

[#]

18.

The circuit of figure is used to measure the value R_x. Ammeter resistance R_a = 0.1 Ω voltmeter resistance R_v = 5000 Ω. It R_x1 and R_x2, are the measured values of R_x with switch in position 1 and 2, the mean of R_x1, and R_x2, is

9.98 Ω

10 Ω

10.04 Ω

10.1 Ω

[#]

19.

The flow rate of electrically conducting liquid without any suspended particle can not be measured by

turbine flow meter

electromagnetic flow meter

ultrasonic flow meter

thermistor based heat flow meter

[#]

20.

Assertion (A): The speed of a shaft can be measured by using a dc tacho generator.

Reason (R): A two phase servometer can also be used as a speed transducer.

Both A and R are true and R is correct explanation of A

Both A and R are true but R is not correct explanation of A

A is true R is false

A is false R is true

[#]

Post your test result / feedback here:

Quality of the Test

Difficulty of the Test

Online Electronics and Communication Engineering Test - Measurements and Instrumentation Test

Marks : 2/20

Test Review : View answers and explanation for this test.

Current Affairs

Interview Questions

Group Discussions