SSC JE Electrical Engineering 23rd Jan 2018 Shift-2

Instructions

For the following questions answer them individually

Question 141

Which of the following is the dimension of capacitance?

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Question 142

A house has 5 fans of 70 W eachthat operate for 16 hours a day and one washing machine of 2000 W that operates for 1 hour per day in the month of June. Whatis the energy consumption (in kWh) of the house in the month of June?

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Question 143

A PMMC typevoltmeter, having a full scale reading of 250 V and an internal resistance of 400 kilo-ohms, is connect with a series resistance of 100 kilo-ohms. Calculate the sensitivity of the voltmeter (in Ohms/Volts).

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Question 144

Determine the percentage voltage error of a potential transformer with the system voltage of 11,000 V and having a turn’s ratio of 104, if the measured secondary voltage is 98 V.

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Question 145

A circuit having powerfactor of 0.8 consumes 40 W. Whatwill be the value of reactive power(in VAR) of the circuit?

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Question 146

Determine the phase angle (in degrees) of a balanced 3-phase star connected system, if the first and the second wattmeter show readings of 200 W and 1200 W respectively.

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Question 147

Which one of the following statement is NOT true about PMMC typeinstruments?

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Question 148

Which one of the following instrument can measure voltage, resistance, and current?

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Question 149

Which one of the following is the CORRECTexpression for voltmeter sensitivity of PMMC type instrument?

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Question 150

Determine the value of unknown resistance $$R_x$$, (in kΩ)and unknown capacitance $$C_{x}$$ (in $$\mu F$$) respectively for the circuit given below, when no current flows through the detector (D)?

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