AIIMS CRE Electrical JE/AE Mock Test- 10 - NEET MCQ

A 3-phase synchronous motor is started by utilizing the torque developed in

A 3 phase 20kVA load has power factor 0.866. If power is measured by two wattmeter method then find reading of each wattmeter when power factor is lagging –

Which instrument is used to measure the high resistance?

Which of the following circuit conditions does a metal oxide varistor (MOV) protect against?

An ammeter is obtained by shunting a galvanometer with resistance. What should an additional shunt be connected across it to double the range?

A circuit element that opposes the change in circuit voltage is

If the discharge voltage of a thyite arrester is 373 kV RMS and the rated voltage is 211 kV RMS, the discharge factor of the arrester is -

For the given V-I characteristic find out the value of dynamic resistance Rac?

In an Intrinsic semiconductor ________.

A 250 V d.c. shunt motor takes a total current of 20 A. Resistance of shunt field winding is 200 Ω and that of armature is 0.3 Ω  What is the current in the armature?

In reference to the figure, the voltage waveform v9t) is measured by a PMMC, a PMMC combined with bridge rectifier and a moving iron (MI) instrument. Two lists are prepared thereafter :

Instrument list List of instrument reading
List - II
a. PMMC
b. PMMC rectifier
c. M.I.
List - II
i. 5 V
ii. 2.75 V
iii. 2.5 V
The correct option relating the instruments and their reading is

A 100 KVA single phase transformer exhibits maximum efficiency at 80% of full load, and the total loss in the transform under this condition is 1000 W. The ohmic losses at full load will be-

The resistance of a (125Ω) strain gauge changes by 1 ohm for 4000 microstrainsAC. The gauge factor is-

Power factor can be improved by using-

How much current flows in an open circuit?

A voltmeter, when connected across a DC supply, reads 124 V. When a series combination of the voltmeter and an unknown resistance X is connected across the supply, the meter reads 4V. If the resistance of the voltmeter is. the value of X is-

The voltage (v) vs current (i) curve of the circuit is shown below :

The internal resistance of the source e is-

Three inductors each of 60 mH are connected in delta. The value of inductance of each arm of the equivalent star connection is-

Capacitor preferred when there is high frequency in the circuits is __________.

A factory takes a steady load of 200 kW at a lagging power factor of 0.8. The tariff is Rs. 100 per kVA of maximum demand per annum plus 5 paise per kWh. The phase advancing plant costs Rs. 500 per kVAR and the annual interest and depreciation together amount to 10%. What is the capacity of the phase advancing plant?

The average value of the voltage wave v = 110175sin(314t - 25⁰) volts is-

Two 1-phase AC motors A and B, operate from a 1000V supply. A consumes 2kW at a power factor of 0.8 (lagging), and B consumes 1 kW at a power factor of 0.5 (lagging). The total current drawn from the supply is approximate-

The given circuit represents a-

Resistance temprature coefficient of copper at 20⁰C at-

Find L_eq of the circuit shown below

Find current i₂ in the circuit shown below

The small pockets of air in the high voltage cable provide_____relative permittivity____electric field, and at these sites, the breakdown is likely to be initiated.