A voltmeter connected across 15 k resistor reads 10 V in the circuit given. Voltmeter is rated at 500 / volt and has a full- scale reading of 20 V. The supply voltage is:a)60 Vb)45 Vc)30 Vd)90 VCorrect answer is option 'A'. Can you explain this answer?

Explore Courses UPSC Exam UPSC Test Series Free Notes EduRev Infinity

Open App

Mechanical Engineering Exam > Mechanical Engineering Questions > A voltmeter connected across 15 k resistor re...

Join the Discussion on the App

A voltmeter connected across 15 kΩ resistor reads 10 V in the circuit given. Voltmeter is rated at 500 Ω / volt and has a full- scale reading of 20 V. The supply voltage is:

a)
60 V
b)
45 V
c)
30 V
d)
90 V

Correct answer is option 'A'. Can you explain this answer?

FREE This question is part of

HPCL Engineer Electrical FT 3

Attempt Test

Attempt this Test

Verified Answer

A voltmeter connected across 15 k resistor reads 10 V in the circuit g...

Concept:

The voltmeter sensitivity (S_v) is determined by dividing the sum of the resistance of the meter (Rm)

Mathematically, sensitivity is expressed as:

E = Rated Voltage or Full scale Reading

Voltmeter sensitivity is expressed in Ohm/Volt

R_m = S_v × E

Calculation:

Sensitivity of voltmeter = 500 Ω/V

Internal resistance of voltmeter = 500 × 20 = 10 kΩ

Effective resistance across A – B is

= 10 || 15 = 6 kΩ

The voltmeter reading is 10 V

⇒ VAB = 10 V

By voltage division,

⇒ Vs = 60 V

View all questions of this test

View all answers Start learning for free

< Previous Question Next Question >

Explore Courses for Mechanical Engineering exam

Similar Mechanical Engineering Doubts

In a DC arc welding operation, the voltage-arc length characteristic was obtained as Varc = 20 + 5l where the arc length l was varied between 5 mm and 7 mm. Here Varc denotes the arc voltage in Volts. The arc current was varied from 400 A to 500 A. Assuming linear power source characteristic, the open circuit voltage and the short circuit current for the welding operation are[ME 2012]

View answer

In a direct current arc welding process, the power source has an open circuit voltage of 100 V and short circuit current of 1000 A. Assume a linear relationship between voltage and current. The arc voltage (V) varies with the arc length (l) as V = 10 + 5l, where V is in volts and l is in mm. The maximum available arc power during the process is _________ kVA (in integer). Correct answer is '25'. Can you explain this answer?

View answer

The voltage length characteristic of a direct current arc is given byV= (30 + 60l) volts,where l is the length of the arc in cm. The power source characteristic is approximated by a straight line with an open circuit voltage = 80 V and a short circuit current = 1000 amp. What is the optimum arc length?

View answer

Two voltage sources of open-circuit voltage of 10 V and 12 V with internal resistances 2 Ω and 3 Ω respectively are connected in parallel with like terminals shorted together. What is the effective open-circuit voltage of the combination?

View answer

) A 100 MVA generator with 10% reactance and a 200 MVA generator with 8% reactance are connected as shown in figure. Choose the base MVA as 100 MVA. i. If the fault level on bus 1 is limited to be 1500 MVA, calculate value of the reactance of bus bar reactor X. ii. Calculate fault MVA at bus 2. iii. Calculate MVA rating of circuit breaker C. 100 MVA 200 MVA 10% 8% Bus 1 Bus 2 Feeder 15% ON 100 MVA BASE Load?

View answer

Top Courses for Mechanical EngineeringView all

GATE Mechanical (ME) Mock Test Series 2025

Top Courses for Mechanical Engineering

View all

A voltmeter connected across 15 k resistor reads 10 V in the circuit given. Voltmeter is rated at 500 / volt and has a full- scale reading of 20 V. The supply voltage is:a)60 Vb)45 Vc)30 Vd)90 VCorrect answer is option 'A'. Can you explain this answer?

Share with a Friend

Answer this doubt

Question Description
A voltmeter connected across 15 k resistor reads 10 V in the circuit given. Voltmeter is rated at 500 / volt and has a full- scale reading of 20 V. The supply voltage is:a)60 Vb)45 Vc)30 Vd)90 VCorrect answer is option 'A'. Can you explain this answer? for Mechanical Engineering 2024 is part of Mechanical Engineering preparation. The Question and answers have been prepared according to the Mechanical Engineering exam syllabus. Information about A voltmeter connected across 15 k resistor reads 10 V in the circuit given. Voltmeter is rated at 500 / volt and has a full- scale reading of 20 V. The supply voltage is:a)60 Vb)45 Vc)30 Vd)90 VCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Mechanical Engineering 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A voltmeter connected across 15 k resistor reads 10 V in the circuit given. Voltmeter is rated at 500 / volt and has a full- scale reading of 20 V. The supply voltage is:a)60 Vb)45 Vc)30 Vd)90 VCorrect answer is option 'A'. Can you explain this answer?.

Solutions for A voltmeter connected across 15 k resistor reads 10 V in the circuit given. Voltmeter is rated at 500 / volt and has a full- scale reading of 20 V. The supply voltage is:a)60 Vb)45 Vc)30 Vd)90 VCorrect answer is option 'A'. Can you explain this answer? in English & in Hindi are available as part of our courses for Mechanical Engineering. Download more important topics, notes, lectures and mock test series for Mechanical Engineering Exam by signing up for free.

Here you can find the meaning of A voltmeter connected across 15 k resistor reads 10 V in the circuit given. Voltmeter is rated at 500 / volt and has a full- scale reading of 20 V. The supply voltage is:a)60 Vb)45 Vc)30 Vd)90 VCorrect answer is option 'A'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of A voltmeter connected across 15 k resistor reads 10 V in the circuit given. Voltmeter is rated at 500 / volt and has a full- scale reading of 20 V. The supply voltage is:a)60 Vb)45 Vc)30 Vd)90 VCorrect answer is option 'A'. Can you explain this answer?, a detailed solution for A voltmeter connected across 15 k resistor reads 10 V in the circuit given. Voltmeter is rated at 500 / volt and has a full- scale reading of 20 V. The supply voltage is:a)60 Vb)45 Vc)30 Vd)90 VCorrect answer is option 'A'. Can you explain this answer? has been provided alongside types of A voltmeter connected across 15 k resistor reads 10 V in the circuit given. Voltmeter is rated at 500 / volt and has a full- scale reading of 20 V. The supply voltage is:a)60 Vb)45 Vc)30 Vd)90 VCorrect answer is option 'A'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice A voltmeter connected across 15 k resistor reads 10 V in the circuit given. Voltmeter is rated at 500 / volt and has a full- scale reading of 20 V. The supply voltage is:a)60 Vb)45 Vc)30 Vd)90 VCorrect answer is option 'A'. Can you explain this answer? tests, examples and also practice Mechanical Engineering tests.

Explore Courses for Mechanical Engineering exam