Electrical Studys

 

 

 

1] Wheatstone bridge consists of _________

a) 4 resistive arms b) 2 resistive arms c) 6 resistive arms d) 8 resistive arms

2] A galvanometer is used as a _________

a) current source b) voltage source c) null detector d) input impedance

3] 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

4] The arms consisting of the resistances R1 and R2 are called _________

a) resistance armsb) impedance armsc) source arms d) ratio arms

5] The arm consisting of the standard known resistance R3 is known as __________

a) standard arm b) resistance arm c) accurate arm d) known arm

6] Resistance R4 is known as ________

a) standard resistance b) unknown resistance to be measured c) resistance arm d) input resistance

7] 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

8] Wheatstone bridge works on the principle of ________

a) full deflection b) partial deflection c) no deflection d) null deflection

9] The balance condition of a Wheatstone bridge depends on the _________

a) ratio of arms R1 and R1 b) ratio of arms R3 and R4 c) emf source and null detector d) current source and power source

10] Balance condition can be obtained by _________

a) varying the standard resistance R3 b) varying the resistance arms R1 and R2 c) keeping the unknown resistance R4 constant d) by making use of a null detector

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