MPPGCL JE Electrical Mock Test - 1 - Electrical Engineering (EE) MCQ

Leaders inspired by French Revolution, British parliamentary system and the Bill of Rights of the US. They also learnt what the British were denying Indian citizens.

The Zimbabwe African National Union-Patriotic Front has been the ruling party in Zimbabwe since independence in 1980. The party was led for many years under Robert Mugabe, first as Prime Minister with the Zimbabwe African National Union and then as President from 1987 after the merger with the Zimbabwe African People's Union and retaining the name ZANU–PF, until 2017 when he was removed as leader.

The given group consists of different Indian ethnicities or cultural groups. The options provided need to identify another group that fits this classification.

• Aryan refers to a historical group, but it is less relevant in the current context.
• Dravidan is a term used for a major cultural group in South India, making it a possible candidate.
• Marathi represents a linguistic and cultural group from Maharashtra, which aligns with the others.
• Barbarian does not fit as it is not an ethnicity or cultural group within India.

Thus, the most fitting choice that belongs to the same category is Marathi.

As Peacock is the national bird of India, similarly Bear is the national animal of Russia.

The sequence is a combination of two series:

I. 19, 38, 114, (____)
II. 2, 3, 4

Considering Series I:
1st term = 19
2nd term = 19*2 = 38
3rd term = 38*3 = 114
Thus, the missing number is 4th term = 114 * 4 = 456

Given:

The side of the square = 22 cm

Formula used:

The perimeter of the square = 4 × a    (Where a = Side of the square)

The circumference of the circle = 2 × π × r     (Where r = The radius of the circle)

Calculation:

Let us assume the radius of the circle be r

⇒ The perimeter of the square = 4 × 22 = 88 cm

⇒ The circumference of the circle = 2 × π ×  r

⇒ 88 = 2 × (22/7) × r

⇒ 

⇒ r = 14 cm

∴ The required result will be 14 cm.

⇒ (2/1000) × (5/10)

⇒ (10/10000)

⇒ (1/1000) = 0.001

∴ 0.002 x 0.5 = 0.001

Checking → statement I:

References:

Point A is 3km north of library.

Point C is 3km North of Point B.

Point D is 3km East of point C.

Inferences:

From the above references, we can conclude that instruction about college is missing in statement I.

So, we can’t determine the direction between library and college.

Thus, statement I alone is not sufficient to answer the question

Checking → Statement II:

References:

College is 7km North of point F.

Point D is 6km North of point E.

Library is 7km west of point E.

Point F is 4km East of point E.

Inferences:

From the above references, we can conclude the following.

We can conclude that library is to the South West direction with respect to college.

Thus, statement II alone is sufficient to answer the question.

Hence, option B is correct.

Load factor

In Auto-transformer, part of energy is transferred through conduction process and remaining through induction process (neglecting losses)
Conduction done through the common part of auto-transformer which is common to both HV & LV windings.

Rotor of an Induction Motor skewed due to following reason…

• With the bar skewed, the amount of the bar cutting the field line grows continuously and the next bar starts cutting the field lines as the first finishes. Due to this, we get Uniform Torque.

• To run quietly by reducing the magnetic hum, reduce rotor locking tendency. Rotor locking tendency occurs when rotor teeth remain directly under stator teeth thus they might be magnetically attracted.

• Primarily to prevent the cogging phenomenon. It is a phenomenon in which, if the rotor conductors are straight, there are chances of magnetic locking or strong coupling between rotor & stator.

• Increase effective Magnetic Coupling between Stator and Rotor Fluxes.

For zero power factor lagging, cosϕR=and sinϕR=1 Therefore, voltage regulation = I X_L

Hence, the correct option is (C)

The Ring main system is very reliable as each distribution transformer is fed with two feeders. That means, in the event of a fault in any section of the feeder, the continuity of the supply is ensured from the alternative path.

Hence, the correct option is (A)

Now for the full wave rectifier,

RMS value = Vm/1.414

Avg. Value = 2*Vm/3.14

Ripple factor = rms/avg = 0.48

Hence, the correct option is (c)

Most of the measurement systems contain three main functional elements are i) Primary sensing element ii) Variable conversion element & iii) Data presentation element. Primary sensing element: The quantity under measurement makes its first contact with the primary sensing element of a measurement system.

Plugging — sometimes referred to as “reverse current braking” — is possible on both DC motors and AC induction motors. For DC motors, plugging is achieved by reversing the polarity of the armature voltage. For AC induction motors, the stator voltage is reversed by interchanging any two of the supply leads.

Hence, the correct option is (B)

Permeability,

μ₀ = B/H = (ØA)/ (I / 2πr)

= (wb * m) / (At * m²)

= wb/Atm

Capacity of phase advancing plant 
=P[tanϕ1-tanϕ2]
= 200[0.75 - 0.5774]
= 34.52 kVAR